N8Programs/oeis-enhanced · Datasets at Hugging Face

id stringlengths 7 11	seq listlengths 1 347	keywords listlengths 1 8 ⌀
A020057	[ 1, 0, 0, 0, 2, 11, 58, 364, 2653, 21951, 203550, 2091015, 23571444, 289285911, 3839613003, 54801749236, 836972170164, 13619819859947, 235251433944553, 4298685292986837, 82847389283019060, 1679542528192113700 ]	[ "nonn" ]
A060964	[ 2, 0, 2, -2, 1, 2, 0, -1, 2, 2, 2, -2, 2, 3, 2, 0, -1, 2, 7, 4, 2, -2, 1, 2, 18, 14, 5, 2, 0, 2, 2, 47, 52, 23, 6, 2, 2, 1, 2, 123, 194, 110, 34, 7, 2, 0, -1, 2, 322, 724, 527, 198, 47, 8, 2, -2, -2, 2,...	[ "sign", "tabl" ]
A129186	[ 1, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0...	[ "nonn", "easy", "tabl" ]
A072122	[ 39, 78, 79, 153, 156, 157, 158, 305, 306, 307, 312, 314, 315, 316, 317, 610, 611, 612, 613, 614, 624, 628, 629, 630, 631, 632, 634, 647, 683, 687, 1220, 1221, 1222, 1224, 1226, 1228, 1229, 1241, 1248, 1256, 1257, 1258, 1260, 1261,...	[ "easy", "nonn" ]
A361244	[ 1, 1, 0, 1, 1, 6, 13, 57, 169, 673, 2301, 8933, 32747, 127063, 483484, 1889957, 7352241, 29003446, 114481435, 455542880, 1816976042, 7285391071, 29291855748, 118218771203, 478372112363, 1941436590561, 7897802784418, 32205683248225, 131602039333873 ]	[ "nonn" ]
A213804	[ 1, 1760, 526443, 34725760, 932587453, 13937940952, 138198204339, 1012226679296, 5875958390949, 28376054552968, 118033137259563, 433946033473016, 1438074947544977, 4362051703339832, 12258717265789492, 32233542519648930, 79941392042719250, 188248433874383740, 423266982431567940 ]	[ "nonn" ]
A215951	[ 15, 30, 35, 45, 60, 70, 75, 90, 105, 120, 135, 140, 143, 150, 175, 180, 210, 225, 240, 245, 255, 270, 273, 280, 285, 286, 300, 315, 323, 350, 357, 360, 375, 385, 405, 420, 435, 450, 455, 465, 480, 490, 510, 525, 540, 546, 56...	[ "nonn" ]
A217347	[ 3, 4, 5, 6, 8, 17, 18, 21, 22, 36, 38, 41, 54, 56, 81, 92, 100, 106, 160, 310, 406, 560, 902, 5549, 9926, 12334, 19374, 19995, 20166, 39609, 62900, 186903, 244461 ]	[ "nonn", "more" ]
A295975	[ 31, 307, 601, 1093, 1171, 1723, 2281, 3541, 4423, 6163, 8011, 8317, 10303, 13399, 13421, 17293, 17851, 19183, 20333, 22651, 26317, 28057, 28393, 30103, 30941, 55117, 72931, 73471, 74209, 78233, 83077, 86143, 112643, 121453, 124123, 136453, 1421...	[ "nonn" ]
A120073	[ 4, 9, 36, 16, 16, 144, 25, 100, 225, 400, 36, 9, 12, 144, 900, 49, 196, 441, 784, 1225, 1764, 64, 64, 576, 64, 1600, 576, 3136, 81, 324, 81, 1296, 2025, 324, 3969, 5184, 100, 25, 900, 400, 100, 225, 4900, 1600, 8100, 121, 48...	[ "nonn", "easy", "tabl", "frac" ]
A225524	[ 1, 2, 8, 24, 66, 184, 488, 1248, 3136, 7776, 18780, 44880, 105896, 246124, 567008, 1293840, 2920626, 6545352, 14555388, 32115120, 70421792, 153451488, 332314512, 715843200, 1534016392, 3270661294, 6941489040, 14667591672, 30859685088, 64670865304, 13501159...	[ "nonn" ]
A142319	[ 59, 149, 239, 419, 509, 599, 1049, 1229, 1319, 1409, 1499, 1949, 2039, 2129, 2309, 2399, 2579, 2939, 3119, 3209, 3299, 3389, 3659, 3929, 4019, 4289, 4649, 4919, 5009, 5099, 5189, 5279, 5639, 6089, 6269, 6359, 6449, 6719, 6899, 7079, 734...	[ "nonn", "easy" ]
A031851	[ 45151, 64375, 77059, 95371, 103375, 105403, 111619, 135679, 165911, 178003, 206579, 208079, 220183, 226255, 235279, 237771, 242719, 245311, 245699, 259319, 263887, 267448, 295399, 295447, 306448, 308339, 309283, 320379, 320407, 332279 ]	[ "nonn" ]
A155767	[ 2, 5, 11, 11, 31, 29, 31, 61, 59, 31, 127, 233, 61, 127, 101, 61, 223, 233, 139, 277, 311, 149, 613, 359, 227, 331, 449, 163, 547, 521, 251, 919, 983, 179, 571, 353, 563, 1693, 599, 277, 739, 773, 307, 907, 1409, 331, 1399, ...	[ "nonn" ]
A101042	[ 1, 2, 6, 22, 116, 88, 470, 112, 284, 242, 202, 772, 1326, 718, 1334, 1328, 2558, 1762, 1642, 2402, 3274, 1732, 7094, 9512, 7984, 5246, 12688, 10532, 9952, 16766, 7702, 60458, 9974, 25708, 5888, 13528, 10342, 25678, 62156, 69518, 76838, ...	[ "nonn" ]
A346757	[ 0, 2, 2, 12, 20, 88, 180, 716, 1648, 6244, 15512, 57188, 149892, 543324, 1481636, 5310764, 4930380, 53102508, 152935148, 540918660, 1588618212, 5595773136, 16701973552 ]	[ "nonn", "more" ]
A151717	[ 0, 1, 7, 22, 52, 190 ]	[ "nonn" ]
A040918	[ 30, 1, 4, 6, 1, 1, 1, 4, 2, 14, 1, 19, 1, 1, 1, 1, 19, 1, 14, 2, 4, 1, 1, 1, 6, 4, 1, 60, 1, 4, 6, 1, 1, 1, 4, 2, 14, 1, 19, 1, 1, 1, 1, 19, 1, 14, 2, 4, 1, 1, 1, 6, 4, 1, 60, 1, 4, 6, 1, 1, 1, ...	[ "nonn", "cofr", "easy", "changed" ]
A078828	[ 1, 1, 2, 3, 2, 10, 6, 63, 2, 2, 20, 330, 6, 390, 126, 1323, 2, 34, 4, 114, 20, 100, 660, 159390, 6, 6, 780, 12870, 126, 237510, 2646, 861273, 2, 2, 68, 102, 4, 740, 228, 2394, 20, 820, 200, 141900, 660, 42900, 318780, 1573...	[ "nonn", "base" ]
A033527	[ 1, 71, 21497, 5493583, 1441534384, 376940962215, 98618371821449, 25799240154157640, 6749345823947488000, 1.7656943809511474e+21, 4.619229492760354e+23, 1.2084356220486925e+26, 3.1613858308925483e+28, 8.27049465691943e+30 ]	[ "nonn" ]
A149902	[ 1, 2, 5, 14, 47, 159, 579, 2119, 8299, 32155, 129903, 521605, 2168721, 8937214, 37854276, 159143916, 684442662, 2922266602, 12717021946, 54977669121, 241582801230, 1055137305760, 4673859417364, 20588950910056, 91821057325252, 407425574625565, 1827561724401272, 8...	[ "nonn", "walk" ]
A043407	[ 171, 514, 857, 1053, 1102, 1151, 1179, 1186, 1193, 1197, 1198, 1199, 1201, 1202, 1203, 1207, 1214, 1221, 1249, 1298, 1347, 1543, 1886, 2229, 2572, 2915, 3258, 3454, 3503, 3552, 3580, 3587, 3594, 3598, 3599, 3600, 3602 ]	[ "nonn", "base" ]
A277569	[ 3, 9, 15, 18, 21, 27, 33, 39, 45, 51, 54, 57, 63, 69, 75, 81, 87, 90, 93, 99, 105, 108, 111, 117, 123, 126, 129, 135, 141, 147, 153, 159, 162, 165, 171, 177, 183, 189, 195, 198, 201, 207, 213, 219, 225, 231, 234, 237, 24...	[ "nonn", "easy" ]
A350917	[ 1, 2, 41, 937, 21506, 493697, 11333521, 260177282, 5972743961, 137112933817, 3147624733826, 72258255944177, 1658792261982241, 38079963769647360, 874180374439907100, 20068068648348217000, 460691398537569040000, 1.057583409771574e+22, 2.4278349284892445e+23, 5.573444501427547e+24...	[ "nonn", "easy" ]
A323870	[ 1, 4, 10, 61, 218, 3136, 13514, 272998, 2362439, 40899248, 295024106, 14045787790, 81055130522, 3040383719360, 61408850927732, 1661142088494553, 15337737297545402, 1128511554421317100, 9768588138876674000, 803306338873366400000, 1.545234761876268e+22 ]	[ "nonn" ]
A198217	[ 5, 9, 4, 8, 6, 3, 2, 8, 0, 3, 5, 7, 7, 1, 8, 7, 1, 4, 1, 7, 1, 5, 9, 2, 0, 7, 7, 9, 0, 1, 0, 2, 7, 8, 7, 9, 8, 5, 8, 9, 2, 3, 1, 4, 3, 6, 2, 3, 3, 0, 7, 1, 6, 5, 9, 4, 0, 1, 0, 4, 6, 0, 3, 6...	[ "nonn", "cons" ]
A243194	[ 0, 1, 4, 9, 10, 12, 16, 22, 25, 30, 36, 39, 40, 43, 48, 49, 52, 55, 64, 66, 75, 81, 82, 88, 90, 94, 100, 103, 108, 118, 120, 121, 130, 139, 142, 144, 156, 157, 160, 165, 166, 169, 172, 178, 181, 183, 192, 196, 198, 205...	[ "nonn" ]
A100039	[ 22, 35, 52, 73, 98, 127, 160, 197, 238, 283, 332, 385, 442, 503, 568, 637, 710, 787, 868, 953, 1042, 1135, 1232, 1333, 1438, 1547, 1660, 1777, 1898, 2023, 2152, 2285, 2422, 2563, 2708, 2857, 3010, 3167, 3328, 3493, 3662, 3835, 4012,...	[ "nonn" ]
A142044	[ 23, 151, 311, 439, 503, 599, 631, 727, 823, 887, 919, 983, 1303, 1367, 1399, 1559, 1783, 1847, 1879, 2039, 2423, 2551, 2647, 2711, 2903, 2999, 3191, 3319, 3511, 3607, 3671, 3767, 3863, 4567, 4663, 4759, 4919, 4951, 5303, 5399, 5431, 5...	[ "nonn", "easy" ]
A093197	[ 1, 6, 56, 720, 11880, 240240, 5765760, 160392960, 5079110400, 180503769600, 7117005772800, 308403583488000, 14572069319808000, 745747076954880000, 41098950018846720000, 2.427001153744527e+21, 1.529010726859052e+23 ]	[ "nonn" ]
A214659	[ 0, 1, 14, 53, 132, 265, 466, 749, 1128, 1617, 2230, 2981, 3884, 4953, 6202, 7645, 9296, 11169, 13278, 15637, 18260, 21161, 24354, 27853, 31672, 35825, 40326, 45189, 50428, 56057, 62090, 68541, 75424, 82753, 90542, 98805, 107556, 116809, 126...	[ "nonn", "easy" ]
A072377	[ 1, 0, 36, 3456, 3110400, 0, 3131834388480000, 3.2162058365970678e+22, 1.9083454070548283e+31 ]	[ "nonn", "more" ]
A060404	[ 0, 1, 3, 8, 25, 78, 270, 926, 3305, 11868, 43232, 158586, 586530, 2181088, 8154710, 30620868, 115435625, 436654794, 1656793374, 6303490610, 24041649128, 91899730068, 352002058402, 1350767683698, 5192237233602, 19989786008160 ]	[ "nonn" ]
A122431	[ 1, 3, 1, 3, 3, 1, 1, 3, 3, 1, 0, 1, 3, 3, 1, 0, 0, 1, 3, 3, 1, 0, 0, 0, 1, 3, 3, 1, 0, 0, 0, 0, 1, 3, 3, 1, 0, 0, 0, 0, 0, 1, 3, 3, 1, 0, 0, 0, 0, 0, 0, 1, 3, 3, 1, 0, 0, 0, 0, 0, 0, 0, 1 ]	[ "easy", "nonn", "tabl" ]
A241629	[ 5, 37, 189, 751, 2558, 7762, 21577, 55867, 136478, 317416, 707817, 1521755, 3168262, 6410970, 12646075, 24378923, 46028497, 85269218, 155238256, 278130152, 490983234, 854910432, 1469679627, 2496560526, 4193815403, 6971437570, 11474937414, 18712755604 ]	[ "nonn" ]
A370440	[ 1, 1, 1, 1, 2, 6, 15, 30, 55, 113, 274, 683, 1596, 3547, 7990, 18968, 46530, 113663, 273392, 656421, 1598270, 3951520, 9827565, 24411649, 60599823, 150978177, 378293690, 951828992, 2398983638, 6051008950, 15284145261, 38690832455, 98154905623, 249390...	[ "nonn" ]
A383689	[ 36, 188, 54, 144, 90, 63, 99 ]	[ "nonn", "hard", "more" ]
A055126	[ 0, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 240, 255, 254, 253, 252, 251, 250, 249, 248, 247, 246, 245, 244, 243, 242, 241, 224, 239, 238, 237, 236, 235, 234, 233, 232, 231, 230, 229, 228, 227, 226, 225, 208, ...	[ "base", "easy", "nonn", "look" ]
A296317	[ 6, 60, 295, 1970, 12547, 77426, 490668, 3078638, 19343899, 121656933, 764438509, 4805307635, 30204033317, 189843766164, 1193281179607, 7500358766425, 47143616101848, 296322172696548, 1862536668117625, 11707004939753232 ]	[ "nonn" ]
A033023	[ 11, 22, 33, 44, 55, 66, 77, 88, 99, 111, 222, 333, 444, 555, 666, 777, 888, 999, 1100, 1111, 1122, 1133, 1144, 1155, 1166, 1177, 1188, 1199, 2200, 2211, 2222, 2233, 2244, 2255, 2266, 2277, 2288, 2299, 3300, 3311, 3322, 3333 ]	[ "nonn", "base" ]
A067821	[ 64, 5264, 33614, 8706123, 101905622, 4843161124, 25189114374, 412352139170, 1122875553872, 28099912628847, 78661670985666 ]	[ "fini", "more", "nonn" ]
A312317	[ 1, 4, 8, 14, 16, 24, 24, 32, 32, 40, 40, 50, 46, 58, 60, 64, 68, 76, 76, 84, 84, 90, 92, 102, 94, 110, 112, 114, 120, 128, 128, 136, 136, 140, 144, 154, 142, 162, 164, 164, 172, 180, 180, 188, 188, 190, 196, 206, 190, ...	[ "nonn" ]
A349061	[ 0, 0, 0, 0, 0, 0, 1, 2, 4, 8, 13, 21, 32, 48, 67, 99, 133, 185, 245, 333, 432, 574, 732, 957, 1208, 1554, 1941, 2468, 3060, 3844, 4731, 5893, 7204, 8898, 10816, 13268, 16043, 19546, 23523, 28497, 34150, 41147, 49106, 58892, 7002...	[ "nonn" ]
A289873	[ 1, 3, 5, 7, 9, 15, 21, 27, 33, 39, 45, 55, 65, 75, 85, 95, 105, 119, 133, 147, 161, 175, 189, 207, 225, 243, 261, 279, 297, 319, 341, 363, 385, 407, 429, 455, 481, 507, 533, 559, 585, 615, 645, 675, 705, 735, 765, 799, 8...	[ "nonn", "easy" ]
A140677	[ 0, 11, 28, 51, 80, 115, 156, 203, 256, 315, 380, 451, 528, 611, 700, 795, 896, 1003, 1116, 1235, 1360, 1491, 1628, 1771, 1920, 2075, 2236, 2403, 2576, 2755, 2940, 3131, 3328, 3531, 3740, 3955, 4176, 4403, 4636, 4875, 5120, 5371, 562...	[ "easy", "nonn" ]
A201712	[ 5, 29, 47, 197, 239, 389, 509, 719, 797, 2309, 2447, 3359, 4229, 4799, 6047, 6269, 6959, 8447, 10079, 10949, 11549, 12479, 14447, 17669, 18047, 19997, 20399, 22469, 24197, 28319, 31247, 33797, 34319, 38639, 45599, 51197, 51839, 55109 ]	[ "nonn", "easy" ]
A287079	[ 1, 2, 0, 12, 1, 56, 0, 240, 7, 992, 1, 4032, 24, 16264, 1, 65280, 96, 261647, 0, 1047591, 384, 4192387, 0, 16773121, 1536, 67100672, 0, 268420035, 6144, 1073711489, 0, 4294901760, 24576, 17179740163, 0, 68719222785, 98304, 274877415424, 0, ...	[ "nonn", "easy" ]
A141338	[ 7, 19, 31, 67, 97, 103, 109, 157, 163, 193, 211, 283, 307, 349, 373, 379, 397, 421, 439, 541, 547, 577, 607, 661, 691, 727, 733, 751, 769, 811, 853, 877, 907, 919, 937, 997, 1033, 1039, 1051, 1063, 1087, 1093, 1117, 1123, 1213, ...	[ "nonn" ]
A229448	[ 17, 47, 128, 324, 753, 1609, 3184, 5890, 10281, 17075, 27176, 41696, 61977, 89613, 126472, 174718, 236833, 315639, 414320, 536444, 685985, 867345, 1085376, 1345402, 1653241, 2015227, 2438232, 2929688, 3497609, 4150613, 4897944, 5749494, 6715825 ]	[ "nonn" ]
A021194	[ 1, 18, 223, 2388, 23809, 228246, 2138131, 19746936, 180745477, 1644848634, 14912475799, 134865314844, 1217706037705, 10982863580382, 98986827702427, 891727782261312, 8030628038119693, 72306120329946690, 650937890891261200, 5859537865552846000, 52742421875166675000 ]	[ "nonn", "easy" ]
A186141	[ 81, 558, 558, 3888, 7686, 3888, 27000, 107874, 107874, 27000, 187704, 1512792, 3090564, 1512792, 187704, 1304424, 21216780, 88110594, 88110594, 21216780, 1304424, 9066168, 297562572, 2513594016, 5108761008, 2513594016, 297562572 ]	[ "nonn", "tabl" ]
A214672	[ 0, 0, 1, 1, 2, 3, 3, 4, 4, 5, 5, 6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 12, 12, 13, 13, 14, 14, 15, 15, 16, 17, 17, 18, 18, 19, 19, 20, 21, 21, 22, 22, 23, 23, 24, 24, 25, 26, 26, 27, 27, 28, 28, 29, 29, 30, 31, ...	[ "nonn" ]
A012943	[ 2, -15, 449, -28721, 3151889, -528627033, 125743579433, -40263668914097, 16699083371803552, -8708208808970478000, 5.576841084485884e+21, -4.302777965593094e+24, 3.9365006955968504e+27 ]	[ "sign" ]
A194318	[ 2, 2, 2, 2, 2, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 2, 3, 3, 2, 1, 1, 3, 3, 1, 2, 3, 2, 1, 2, 3, 1, 2, 3, 1, 2, 3, 1, 2, 2, 1, 3, 2, 2, 3, 1, 3, 1, 2, 2, 2, 2, 2, 3, 1, 3...	[ "nonn", "tabl" ]
A375241	[ 9, 12, 18, 19, 24, 27, 30, 33, 37, 39, 42, 46, 48, 51, 54, 57, 60, 63, 64, 69, 72, 73, 75, 81, 82, 84, 87, 90, 93, 96, 99, 100, 102, 108, 109, 111, 114, 117, 118, 123, 126, 127, 129, 132, 135, 138, 141, 144, 145, 147, ...	[ "nonn", "base", "easy" ]
A018411	[ 1, 3, 7, 17, 21, 51, 119, 357 ]	[ "nonn", "fini", "full", "easy" ]
A109317	[ 1, 1, 2, 6, 22, 94, 446, 2294, 12542, 71974, 429342, 2643606, 16710382, 107980870, 710933118, 4756345750, 32265548622, 221540438502, 1537355395934, 10768777480374, 76063545106670, 541277072787334, 3877624448977150 ]	[ "nonn" ]
A304739	[ 0, 1, 2, 3, 2, 4, 4, 3, 4, 3, 5, 5, 5, 4, 6, 5, 4, 5, 6, 5, 7, 6, 6, 6, 7, 6, 7, 6, 8, 6, 5, 8, 7, 9, 7, 9, 8, 10, 7, 6, 7, 10, 9, 11, 6, 7, 8, 7, 7, 8, 8, 7, 8, 9, 8, 11, 10, 12, 8, 12, 11, 13,...	[ "nonn" ]
A174503	[ 1, 8, 1, 96, 1, 968, 1, 9600, 1, 95048, 1, 940896, 1, 9313928, 1, 92198400, 1, 912670088, 1, 9034502496, 1, 89432354888, 1, 885289046400, 1, 8763458109128, 1, 86749292044896, 1, 858729462339848, 1, 8500545331353600, 1 ]	[ "cofr", "nonn", "easy" ]
A033408	[ 88, 44, 29, 22, 17, 14, 12, 11, 9, 8, 8, 7, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, ...	[ "easy", "nonn" ]
A361531	[ 1, -1, 0, 2, -3, -2, 21, -44, -62, 631, -1367, -3170, 34849, -86855, -302964, 3058342, -8509971, -36488802, 430842051, -1111575888, -6244999438, 78663444549, -250850311489, -1724880111306, 18475299723737, -65061274823853, -444914618968648, 6831921081061986 ]	[ "sign", "easy" ]
A382096	[ 1, 1, 2, 6, 15, 39, 110, 308, 869, 2499, 7238, 21086, 61871, 182523, 540830, 1609238, 4805871, 14398559, 43264896, 130347450, 393650751, 1191441349, 3613345360, 10978726634, 33414836743, 101863289331, 310984519412, 950734751040, 2910319385881, 8919643999157,...	[ "nonn" ]
A134120	[ 16141, 34981, 38501, 39251, 45439, 52391, 58789, 61169, 68821, 75437, 78737, 78989, 81239, 81569, 82657, 84871, 88547, 96601, 97729, 104417, 105277, 108301, 116047, 116747, 117991, 119447, 120431, 121081, 122401, 125821, 126781, 126989 ]	[ "nonn" ]
A123045	[ 0, 2, 6, 12, 39, 104, 366, 1172, 4179, 14572, 52740, 190652, 700274, 2581112, 9591666, 35791472, 134236179, 505290272, 1908947406, 7233629132, 27488079132, 104715393912, 399823554006, 1529755308212, 5864066561554, 22517998136936, 86607703209516 ]	[ "nonn" ]
A206519	[ 11136544, 180689239504, 2933481908580803, 47624714678427760000, 7.731810994726666e+23, 1.2552495871839218e+28, 2.0378815841386797e+32, 3.308474580174075e+36 ]	[ "nonn" ]
A254714	[ 1, 6, 7, 8, 28, 85, 113, 198, 267, 659, 1014, 10224, 13451, 537766, 925036, 1693817, 1803181, 2053555, 11518526, 41877989, 66797547, 90328940, 105345415, 343594795, 654075889, 934979323, 1061368874 ]	[ "nonn" ]
A151264	[ 1, 1, 3, 6, 22, 55, 215, 607, 2465, 7506, 31246, 100251, 424703, 1416068, 6078196, 20874918, 90520934, 318287333, 1391560139, 4987827222, 21954239238, 79959969732, 353939620788, 1306665513502, 5811727596350, 21706525827949, 96945570701577, 365763459361249, 163...	[ "nonn", "walk" ]
A045321	[ 2, 3, 7, 11, 13, 17, 23, 31, 37, 41, 43, 47, 53, 61, 67, 71, 73, 83, 97, 101, 103, 107, 113, 127, 131, 137, 151, 157, 163, 167, 173, 181, 191, 193, 197, 211, 223, 227, 233, 241, 251, 257, 263, 271, 277, 281, 283 ]	[ "nonn", "easy" ]
A367849	[ 1, 1, 2, 1, 3, 1, 1, 4, 1, 1, 2, 5, 3, 1, 1, 4, 6, 1, 1, 5, 1, 1, 7, 1, 6, 1, 1, 2, 1, 8, 7, 1, 1, 2, 1, 3, 1, 9, 4, 1, 1, 2, 5, 3, 1, 1, 10, 6, 1, 1, 2, 1, 3, 7, 1, 4, 11, 1, 1, 5, 8, 1, 1, ...	[ "nonn" ]
A091836	[ 1, 1, 1, 1, 2, 1, 2, 3, 3, 1, 4, 6, 6, 4, 1, 9, 13, 13, 10, 5, 1, 21, 30, 30, 24, 15, 6, 1, 51, 72, 72, 59, 40, 21, 7, 1, 127, 178, 178, 148, 105, 62, 28, 8, 1, 323, 450, 450, 378, 276, 174, 91, 36, 9, 1, 8...	[ "nonn", "tabl" ]
A381307	[ 1, 1, 1, 4, 25, 126, 841, 8303, 84561, 925480, 12285121, 181409427, 2840445169, 49113986936, 932675641353, 18883732449871, 408771283327969, 9499097097870720, 234457146543484220, 6115077874320445000, 168654204908597840000, 4.902220448616468e+21 ]	[ "nonn" ]
A327899	[ 1, 1, 1, 1, 2, 1, 2, 1, 6, 3, 2, 1, 63, 1, 2, 317, 657, 1, 4333, 1, 9609 ]	[ "nonn", "more" ]
A006983	[ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 8, 12, 26, 160, 441, 1152, 3001, 7901, 20566, 54541, 144161, 378197, 990981, 2578081, 6674067, 17086918 ]	[ "nonn", "hard", "more", "nice" ]
A296486	[ 5, 8, 5, 9, 9, 9, 6, 6, 2, 9, 8, 4, 4, 6, 4, 4, 0, 3, 1, 2, 8, 6, 0, 3, 5, 7, 7, 5, 8, 6, 0, 5, 4, 2, 6, 0, 8, 8, 1, 6, 1, 8, 8, 8, 4, 6, 3, 9, 7, 2, 6, 3, 6, 1, 0, 1, 9, 6, 8, 1, 0, 0, 1, 8...	[ "nonn", "easy", "cons" ]
A010615	[ 3, 5, 3, 0, 3, 4, 8, 3, 3, 5, 3, 2, 6, 0, 6, 3, 0, 0, 2, 1, 9, 5, 9, 7, 2, 5, 9, 2, 8, 4, 8, 2, 9, 5, 3, 0, 4, 3, 4, 0, 7, 2, 6, 5, 6, 6, 4, 7, 4, 2, 1, 6, 4, 2, 5, 4, 6, 7, 7, 1, 4, 5, 9, 5...	[ "nonn", "cons" ]
A233840	[ 480071296, 326595297792, 220722832237568, 149185819914631170, 100827647839987840000, 6.814476266564238e+22, 4.605587590682674e+25, 3.1127025414950383e+28 ]	[ "nonn" ]
A259639	[ 236, 813, 3849, 12348, 44500, 182654, 670088, 2436036, 9361060, 35240824, 130549550, 491638762, 1851623400, 6921303290, 25956767494, 97538420980, 365652086782, 1370955967484, 5145436930220, 19301728914022, 72388123438246 ]	[ "nonn" ]
A154252	[ 1, 2, 12, 32, 72, 152, 312, 632, 1272, 2552, 5112, 10232, 20472, 40952, 81912, 163832, 327672, 655352, 1310712, 2621432, 5242872, 10485752, 20971512, 41943032, 83886072, 167772152, 335544312, 671088632, 1342177272, 2684354552, 5368709112, 10737418232 ]	[ "nonn", "easy" ]
A149634	[ 1, 1, 5, 15, 69, 229, 1103, 4123, 20063, 78141, 383261, 1547761, 7628147, 31532753, 155942825, 656344887, 3253277131, 13881923067, 68926594631, 297404679961, 1478590735749, 6437969004419, 32038866205609, 140560828355783, 700049236582825, 3091048262962159, 15404168...	[ "nonn", "walk" ]
A203984	[ 6, 24, 24, 96, 144, 96, 384, 864, 864, 384, 1536, 5184, 7776, 5184, 1536, 6144, 31104, 69984, 69984, 31104, 6144, 24576, 186624, 629856, 956448, 629856, 186624, 24576, 98304, 1119744, 5668704, 13071456, 13071456, 5668704, 1119744, 98304, 393216...	[ "nonn", "tabl" ]
A236005	[ 2960, 41608, 587908, 8623452, 130105204, 2020106076, 32207456576, 526051660468, 8776747793696, 149126416376292, 2572768815952496, 44945537009056720, 793178747691319600, 14111447386534908000, 252672813228732500000 ]	[ "nonn" ]
A120845	[ 2, 10, 23, 50, 117, 300, 823, 2350, 6857, 20240, 60123, 179250, 535597, 1602580, 4799423, 14381750, 43112337, 129271320, 387682723, 1162785850, 3487833077, 10462450460, 31385254023, 94151567550, 282446313817, 847322164000, 2541932937323, 7625731702850, 2287706...	[ "nonn", "easy" ]
A218640	[ 1, 1001, 32689, 1048353, 33546641, 1073471633, 34351030657, 1099232741569, 35175445605065, 1125614194685977, 36019652123390670, 1152628800344096900, 36884119447102423000, 1.1802917530621826e+21, 3.776933388215051e+22 ]	[ "nonn" ]
A003626	[ 11, 13, 17, 19, 31, 37, 53, 59, 71, 73, 79, 97, 113, 131, 137, 139, 151, 157, 173, 179, 191, 193, 197, 199, 211, 233, 239, 251, 257, 271, 277, 293, 311, 313, 317, 331, 337, 353, 359, 373, 379, 397, 419, 431, 433, 439, 457, ...	[ "nonn", "nice" ]
A030146	[ 4, 9, 25, 49, 121, 169, 361, 529, 961, 12769, 16129, 18769, 32761, 72361, 76729, 78961, 96721, 212521, 214369, 436921, 452929, 458329, 1038361, 1630729, 1852321, 3892729, 5230369, 5470921, 5650129, 5812921, 5870929, 7230721 ]	[ "nonn", "base" ]
A098807	[ 2, 4, 6, 8, 10, 12, 14, 18, 20, 24, 28, 30, 34, 36, 38, 40, 42, 48, 50, 54, 60, 64, 66, 68, 72, 78, 80, 84, 90, 94, 96, 98, 102, 104, 108, 110, 114, 120, 124, 126, 132, 134, 138, 144, 150, 154, 156, 162, 164, 168, 17...	[ "easy", "nonn" ]
A158037	[ 1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 13, 14, 15, 17, 18, 19, 20, 21, 22, 23, 24, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, ...	[ "nonn" ]
A263507	[ 8, 48, 204, 770, 2687, 8559, 25383, 71498, 193691, 508996, 1306369, 3291584, 8173381, 20060419, 48777993, 117717414, 282365804, 673959638, 1602152316, 3796140809, 8970338435, 21150183227, 49777148466, 116976012851, 274555052038, 643757239647, 1508176839750, 3530...	[ "nonn" ]
A022470	[ 2, 21, 2111, 2113, 211231, 2112213111, 211222113113, 21122312311231, 2.112223111213112e+21, 2.112233113211131e+25, 2.1122232123121134e+29, 2.112233121112131e+43, 2.1122232112113212e+55 ]	[ "nonn", "base", "easy", "nice" ]
A255075	[ 208, 676, 2444, 8836, 31960, 115600, 418200, 1512900, 5473500, 19802500, 71645000, 259210000, 937825000, 3393062500, 12276187500, 44415562500, 160696875000, 581406250000, 2103546875000, 7610701562500, 27535773437500, 99625351562500 ]	[ "nonn" ]
A380969	[ 0, 1, 3, 13, 47, 307, 2163, 17557, 191807, 1413443, 16485763, 169053487 ]	[ "nonn", "hard", "more" ]
A356109	[ 2, 4, 10, 5996, 8894, 11204, 14290, 23110, 30866, 37594, 43054, 64390, 74554, 83464, 93460, 109456, 111940, 132304, 151904, 184706, 238850, 262630, 265990, 277630, 300206, 315410, 352600, 355450, 376190, 404954, 415180, 462830, 483494, 512354, 5127...	[ "nonn" ]
A089302	[ 1, 1, 1, 2, 3, 1, 5, 10, 6, 1, 14, 36, 32, 11, 1, 43, 137, 164, 89, 20, 1, 144, 551, 835, 627, 235, 37, 1, 523, 2346, 4320, 4166, 2210, 610, 70, 1, 2048, 10568, 22980, 27178, 18764, 7494, 1582, 135, 1, 8597, 50265, 126352,...	[ "nonn", "tabl" ]
A035855	[ 1, 870, 189660, 18502290, 1026829680, 37041354030, 946156012020, 18170467948410, 274296114962940, 3368607034611630, 34588475083615740, 303610009666655360, 2320524189173328000, 15683018934278392000 ]	[ "nonn", "easy" ]
A149076	[ 1, 1, 4, 7, 28, 62, 258, 669, 2872, 8202, 35902, 109484, 486544, 1558474, 7007624, 23310931, 105792634, 362683186, 1658516164, 5827726534, 26818213980, 96192530864, 445026604190, 1624336763598, 7549247734720, 27971272771960, 130514411695862, 489935655695282, 2...	[ "nonn", "walk" ]
A041286	[ 12, 25, 612, 1249, 30588, 62425, 1528788, 3120001, 76408812, 155937625, 3818911812, 7793761249, 190869181788, 389532124825, 9539640177588, 19468812480001, 476791139697612, 973051091875225, 23830017344703012 ]	[ "nonn", "cofr", "frac", "easy" ]
A352659	[ 1, 1, 2, 7, 28, 140, 841, 5887, 47096, 423865, 4238650, 46625150, 559501801, 7273523413, 101829327782, 1527439916731, 24439038667696, 415463657350832, 7478345832314977, 142088570813984560, 2841771416279691300, 59677199741873510000, 1.3128983943212174e+21 ]	[ "nonn" ]
A309858	[ 2, 1, 2, 1, 2, 2, 1, 1, 3, 2, 1, 1, 2, 4, 2, 1, 1, 1, 4, 5, 2, 1, 1, 1, 2, 11, 6, 2, 1, 1, 1, 1, 5, 34, 7, 2, 1, 1, 1, 1, 2, 34, 156, 8, 2, 1, 1, 1, 1, 1, 6, 2136, 1044, 9, 2, 1, 1, 1, 1, 1, 2, ...	[ "nonn", "tabl" ]
A203234	[ 1, 2, 3, 7, 9, 11, 13, 28, 32, 36, 40, 84, 92, 100, 108, 224, 240, 256, 272, 560, 592, 624, 656, 1344, 1408, 1472, 1536, 3136, 3264, 3392, 3520, 7168, 7424, 7680, 7936, 16128, 16640, 17152, 17664, 35840, 36864, 37888, 38912, 78848...	[ "nonn" ]
A345189	[ 1, 1, 6, 41, 330, 2882, 26604, 255313, 2521986, 25473638, 261898548, 2731724778, 28836047844, 307477681188, 3306988334808, 35833139582529, 390803960909106, 4286644113507902, 47258491871201500, 523372307883323600, 5819831138546794000, 64954314678710560000, 7273717077642323...	[ "nonn" ]

A020057

[ 1, 0, 0, 0, 2, 11, 58, 364, 2653, 21951, 203550, 2091015, 23571444, 289285911, 3839613003, 54801749236, 836972170164, 13619819859947, 235251433944553, 4298685292986837, 82847389283019060, 1679542528192113700 ]

[ "nonn" ]

A060964

[ 2, 0, 2, -2, 1, 2, 0, -1, 2, 2, 2, -2, 2, 3, 2, 0, -1, 2, 7, 4, 2, -2, 1, 2, 18, 14, 5, 2, 0, 2, 2, 47, 52, 23, 6, 2, 2, 1, 2, 123, 194, 110, 34, 7, 2, 0, -1, 2, 322, 724, 527, 198, 47, 8, 2, -2, -2, 2,...

[ "sign", "tabl" ]

A129186

[ 1, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0...

[ "nonn", "easy", "tabl" ]

A072122

[ 39, 78, 79, 153, 156, 157, 158, 305, 306, 307, 312, 314, 315, 316, 317, 610, 611, 612, 613, 614, 624, 628, 629, 630, 631, 632, 634, 647, 683, 687, 1220, 1221, 1222, 1224, 1226, 1228, 1229, 1241, 1248, 1256, 1257, 1258, 1260, 1261,...

[ "easy", "nonn" ]

A361244

[ 1, 1, 0, 1, 1, 6, 13, 57, 169, 673, 2301, 8933, 32747, 127063, 483484, 1889957, 7352241, 29003446, 114481435, 455542880, 1816976042, 7285391071, 29291855748, 118218771203, 478372112363, 1941436590561, 7897802784418, 32205683248225, 131602039333873 ]

[ "nonn" ]

A213804

[ 1, 1760, 526443, 34725760, 932587453, 13937940952, 138198204339, 1012226679296, 5875958390949, 28376054552968, 118033137259563, 433946033473016, 1438074947544977, 4362051703339832, 12258717265789492, 32233542519648930, 79941392042719250, 188248433874383740, 423266982431567940 ]

[ "nonn" ]

A215951

[ 15, 30, 35, 45, 60, 70, 75, 90, 105, 120, 135, 140, 143, 150, 175, 180, 210, 225, 240, 245, 255, 270, 273, 280, 285, 286, 300, 315, 323, 350, 357, 360, 375, 385, 405, 420, 435, 450, 455, 465, 480, 490, 510, 525, 540, 546, 56...

[ "nonn" ]

A217347

[ 3, 4, 5, 6, 8, 17, 18, 21, 22, 36, 38, 41, 54, 56, 81, 92, 100, 106, 160, 310, 406, 560, 902, 5549, 9926, 12334, 19374, 19995, 20166, 39609, 62900, 186903, 244461 ]

[ "nonn", "more" ]

A295975

[ 31, 307, 601, 1093, 1171, 1723, 2281, 3541, 4423, 6163, 8011, 8317, 10303, 13399, 13421, 17293, 17851, 19183, 20333, 22651, 26317, 28057, 28393, 30103, 30941, 55117, 72931, 73471, 74209, 78233, 83077, 86143, 112643, 121453, 124123, 136453, 1421...

[ "nonn" ]

A120073

[ 4, 9, 36, 16, 16, 144, 25, 100, 225, 400, 36, 9, 12, 144, 900, 49, 196, 441, 784, 1225, 1764, 64, 64, 576, 64, 1600, 576, 3136, 81, 324, 81, 1296, 2025, 324, 3969, 5184, 100, 25, 900, 400, 100, 225, 4900, 1600, 8100, 121, 48...

[ "nonn", "easy", "tabl", "frac" ]

A225524

[ 1, 2, 8, 24, 66, 184, 488, 1248, 3136, 7776, 18780, 44880, 105896, 246124, 567008, 1293840, 2920626, 6545352, 14555388, 32115120, 70421792, 153451488, 332314512, 715843200, 1534016392, 3270661294, 6941489040, 14667591672, 30859685088, 64670865304, 13501159...

[ "nonn" ]

A142319

[ 59, 149, 239, 419, 509, 599, 1049, 1229, 1319, 1409, 1499, 1949, 2039, 2129, 2309, 2399, 2579, 2939, 3119, 3209, 3299, 3389, 3659, 3929, 4019, 4289, 4649, 4919, 5009, 5099, 5189, 5279, 5639, 6089, 6269, 6359, 6449, 6719, 6899, 7079, 734...

[ "nonn", "easy" ]

A031851

[ 45151, 64375, 77059, 95371, 103375, 105403, 111619, 135679, 165911, 178003, 206579, 208079, 220183, 226255, 235279, 237771, 242719, 245311, 245699, 259319, 263887, 267448, 295399, 295447, 306448, 308339, 309283, 320379, 320407, 332279 ]

[ "nonn" ]

A155767

[ 2, 5, 11, 11, 31, 29, 31, 61, 59, 31, 127, 233, 61, 127, 101, 61, 223, 233, 139, 277, 311, 149, 613, 359, 227, 331, 449, 163, 547, 521, 251, 919, 983, 179, 571, 353, 563, 1693, 599, 277, 739, 773, 307, 907, 1409, 331, 1399, ...

[ "nonn" ]

A101042

[ 1, 2, 6, 22, 116, 88, 470, 112, 284, 242, 202, 772, 1326, 718, 1334, 1328, 2558, 1762, 1642, 2402, 3274, 1732, 7094, 9512, 7984, 5246, 12688, 10532, 9952, 16766, 7702, 60458, 9974, 25708, 5888, 13528, 10342, 25678, 62156, 69518, 76838, ...

[ "nonn" ]

A346757

[ 0, 2, 2, 12, 20, 88, 180, 716, 1648, 6244, 15512, 57188, 149892, 543324, 1481636, 5310764, 4930380, 53102508, 152935148, 540918660, 1588618212, 5595773136, 16701973552 ]

[ "nonn", "more" ]

A151717

[ 0, 1, 7, 22, 52, 190 ]

[ "nonn" ]

A040918

[ 30, 1, 4, 6, 1, 1, 1, 4, 2, 14, 1, 19, 1, 1, 1, 1, 19, 1, 14, 2, 4, 1, 1, 1, 6, 4, 1, 60, 1, 4, 6, 1, 1, 1, 4, 2, 14, 1, 19, 1, 1, 1, 1, 19, 1, 14, 2, 4, 1, 1, 1, 6, 4, 1, 60, 1, 4, 6, 1, 1, 1, ...

[ "nonn", "cofr", "easy", "changed" ]

A078828

[ 1, 1, 2, 3, 2, 10, 6, 63, 2, 2, 20, 330, 6, 390, 126, 1323, 2, 34, 4, 114, 20, 100, 660, 159390, 6, 6, 780, 12870, 126, 237510, 2646, 861273, 2, 2, 68, 102, 4, 740, 228, 2394, 20, 820, 200, 141900, 660, 42900, 318780, 1573...

[ "nonn", "base" ]

A033527

[ 1, 71, 21497, 5493583, 1441534384, 376940962215, 98618371821449, 25799240154157640, 6749345823947488000, 1.7656943809511474e+21, 4.619229492760354e+23, 1.2084356220486925e+26, 3.1613858308925483e+28, 8.27049465691943e+30 ]

[ "nonn" ]

A149902

[ 1, 2, 5, 14, 47, 159, 579, 2119, 8299, 32155, 129903, 521605, 2168721, 8937214, 37854276, 159143916, 684442662, 2922266602, 12717021946, 54977669121, 241582801230, 1055137305760, 4673859417364, 20588950910056, 91821057325252, 407425574625565, 1827561724401272, 8...

[ "nonn", "walk" ]

A043407

[ 171, 514, 857, 1053, 1102, 1151, 1179, 1186, 1193, 1197, 1198, 1199, 1201, 1202, 1203, 1207, 1214, 1221, 1249, 1298, 1347, 1543, 1886, 2229, 2572, 2915, 3258, 3454, 3503, 3552, 3580, 3587, 3594, 3598, 3599, 3600, 3602 ]

[ "nonn", "base" ]

A277569

[ 3, 9, 15, 18, 21, 27, 33, 39, 45, 51, 54, 57, 63, 69, 75, 81, 87, 90, 93, 99, 105, 108, 111, 117, 123, 126, 129, 135, 141, 147, 153, 159, 162, 165, 171, 177, 183, 189, 195, 198, 201, 207, 213, 219, 225, 231, 234, 237, 24...

[ "nonn", "easy" ]

A350917

[ 1, 2, 41, 937, 21506, 493697, 11333521, 260177282, 5972743961, 137112933817, 3147624733826, 72258255944177, 1658792261982241, 38079963769647360, 874180374439907100, 20068068648348217000, 460691398537569040000, 1.057583409771574e+22, 2.4278349284892445e+23, 5.573444501427547e+24...

[ "nonn", "easy" ]

A323870

[ 1, 4, 10, 61, 218, 3136, 13514, 272998, 2362439, 40899248, 295024106, 14045787790, 81055130522, 3040383719360, 61408850927732, 1661142088494553, 15337737297545402, 1128511554421317100, 9768588138876674000, 803306338873366400000, 1.545234761876268e+22 ]

[ "nonn" ]

A198217

[ 5, 9, 4, 8, 6, 3, 2, 8, 0, 3, 5, 7, 7, 1, 8, 7, 1, 4, 1, 7, 1, 5, 9, 2, 0, 7, 7, 9, 0, 1, 0, 2, 7, 8, 7, 9, 8, 5, 8, 9, 2, 3, 1, 4, 3, 6, 2, 3, 3, 0, 7, 1, 6, 5, 9, 4, 0, 1, 0, 4, 6, 0, 3, 6...

[ "nonn", "cons" ]

A243194

[ 0, 1, 4, 9, 10, 12, 16, 22, 25, 30, 36, 39, 40, 43, 48, 49, 52, 55, 64, 66, 75, 81, 82, 88, 90, 94, 100, 103, 108, 118, 120, 121, 130, 139, 142, 144, 156, 157, 160, 165, 166, 169, 172, 178, 181, 183, 192, 196, 198, 205...

[ "nonn" ]

A100039

[ 22, 35, 52, 73, 98, 127, 160, 197, 238, 283, 332, 385, 442, 503, 568, 637, 710, 787, 868, 953, 1042, 1135, 1232, 1333, 1438, 1547, 1660, 1777, 1898, 2023, 2152, 2285, 2422, 2563, 2708, 2857, 3010, 3167, 3328, 3493, 3662, 3835, 4012,...

[ "nonn" ]

A142044

[ 23, 151, 311, 439, 503, 599, 631, 727, 823, 887, 919, 983, 1303, 1367, 1399, 1559, 1783, 1847, 1879, 2039, 2423, 2551, 2647, 2711, 2903, 2999, 3191, 3319, 3511, 3607, 3671, 3767, 3863, 4567, 4663, 4759, 4919, 4951, 5303, 5399, 5431, 5...

[ "nonn", "easy" ]

A093197

[ 1, 6, 56, 720, 11880, 240240, 5765760, 160392960, 5079110400, 180503769600, 7117005772800, 308403583488000, 14572069319808000, 745747076954880000, 41098950018846720000, 2.427001153744527e+21, 1.529010726859052e+23 ]

[ "nonn" ]

A214659

[ 0, 1, 14, 53, 132, 265, 466, 749, 1128, 1617, 2230, 2981, 3884, 4953, 6202, 7645, 9296, 11169, 13278, 15637, 18260, 21161, 24354, 27853, 31672, 35825, 40326, 45189, 50428, 56057, 62090, 68541, 75424, 82753, 90542, 98805, 107556, 116809, 126...

[ "nonn", "easy" ]

A072377

[ 1, 0, 36, 3456, 3110400, 0, 3131834388480000, 3.2162058365970678e+22, 1.9083454070548283e+31 ]

[ "nonn", "more" ]

A060404

[ 0, 1, 3, 8, 25, 78, 270, 926, 3305, 11868, 43232, 158586, 586530, 2181088, 8154710, 30620868, 115435625, 436654794, 1656793374, 6303490610, 24041649128, 91899730068, 352002058402, 1350767683698, 5192237233602, 19989786008160 ]

[ "nonn" ]

A122431

[ 1, 3, 1, 3, 3, 1, 1, 3, 3, 1, 0, 1, 3, 3, 1, 0, 0, 1, 3, 3, 1, 0, 0, 0, 1, 3, 3, 1, 0, 0, 0, 0, 1, 3, 3, 1, 0, 0, 0, 0, 0, 1, 3, 3, 1, 0, 0, 0, 0, 0, 0, 1, 3, 3, 1, 0, 0, 0, 0, 0, 0, 0, 1 ]

[ "easy", "nonn", "tabl" ]

A241629

[ 5, 37, 189, 751, 2558, 7762, 21577, 55867, 136478, 317416, 707817, 1521755, 3168262, 6410970, 12646075, 24378923, 46028497, 85269218, 155238256, 278130152, 490983234, 854910432, 1469679627, 2496560526, 4193815403, 6971437570, 11474937414, 18712755604 ]

[ "nonn" ]

A370440

[ 1, 1, 1, 1, 2, 6, 15, 30, 55, 113, 274, 683, 1596, 3547, 7990, 18968, 46530, 113663, 273392, 656421, 1598270, 3951520, 9827565, 24411649, 60599823, 150978177, 378293690, 951828992, 2398983638, 6051008950, 15284145261, 38690832455, 98154905623, 249390...

[ "nonn" ]

A383689

[ 36, 188, 54, 144, 90, 63, 99 ]

[ "nonn", "hard", "more" ]

A055126

[ 0, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 240, 255, 254, 253, 252, 251, 250, 249, 248, 247, 246, 245, 244, 243, 242, 241, 224, 239, 238, 237, 236, 235, 234, 233, 232, 231, 230, 229, 228, 227, 226, 225, 208, ...

[ "base", "easy", "nonn", "look" ]

A296317

[ 6, 60, 295, 1970, 12547, 77426, 490668, 3078638, 19343899, 121656933, 764438509, 4805307635, 30204033317, 189843766164, 1193281179607, 7500358766425, 47143616101848, 296322172696548, 1862536668117625, 11707004939753232 ]

[ "nonn" ]

A033023

[ 11, 22, 33, 44, 55, 66, 77, 88, 99, 111, 222, 333, 444, 555, 666, 777, 888, 999, 1100, 1111, 1122, 1133, 1144, 1155, 1166, 1177, 1188, 1199, 2200, 2211, 2222, 2233, 2244, 2255, 2266, 2277, 2288, 2299, 3300, 3311, 3322, 3333 ]

[ "nonn", "base" ]

A067821

[ 64, 5264, 33614, 8706123, 101905622, 4843161124, 25189114374, 412352139170, 1122875553872, 28099912628847, 78661670985666 ]

[ "fini", "more", "nonn" ]

A312317

[ 1, 4, 8, 14, 16, 24, 24, 32, 32, 40, 40, 50, 46, 58, 60, 64, 68, 76, 76, 84, 84, 90, 92, 102, 94, 110, 112, 114, 120, 128, 128, 136, 136, 140, 144, 154, 142, 162, 164, 164, 172, 180, 180, 188, 188, 190, 196, 206, 190, ...

[ "nonn" ]

A349061

[ 0, 0, 0, 0, 0, 0, 1, 2, 4, 8, 13, 21, 32, 48, 67, 99, 133, 185, 245, 333, 432, 574, 732, 957, 1208, 1554, 1941, 2468, 3060, 3844, 4731, 5893, 7204, 8898, 10816, 13268, 16043, 19546, 23523, 28497, 34150, 41147, 49106, 58892, 7002...

[ "nonn" ]

A289873

[ 1, 3, 5, 7, 9, 15, 21, 27, 33, 39, 45, 55, 65, 75, 85, 95, 105, 119, 133, 147, 161, 175, 189, 207, 225, 243, 261, 279, 297, 319, 341, 363, 385, 407, 429, 455, 481, 507, 533, 559, 585, 615, 645, 675, 705, 735, 765, 799, 8...

[ "nonn", "easy" ]

A140677

[ 0, 11, 28, 51, 80, 115, 156, 203, 256, 315, 380, 451, 528, 611, 700, 795, 896, 1003, 1116, 1235, 1360, 1491, 1628, 1771, 1920, 2075, 2236, 2403, 2576, 2755, 2940, 3131, 3328, 3531, 3740, 3955, 4176, 4403, 4636, 4875, 5120, 5371, 562...

[ "easy", "nonn" ]

A201712

[ 5, 29, 47, 197, 239, 389, 509, 719, 797, 2309, 2447, 3359, 4229, 4799, 6047, 6269, 6959, 8447, 10079, 10949, 11549, 12479, 14447, 17669, 18047, 19997, 20399, 22469, 24197, 28319, 31247, 33797, 34319, 38639, 45599, 51197, 51839, 55109 ]

[ "nonn", "easy" ]

A287079

[ 1, 2, 0, 12, 1, 56, 0, 240, 7, 992, 1, 4032, 24, 16264, 1, 65280, 96, 261647, 0, 1047591, 384, 4192387, 0, 16773121, 1536, 67100672, 0, 268420035, 6144, 1073711489, 0, 4294901760, 24576, 17179740163, 0, 68719222785, 98304, 274877415424, 0, ...

[ "nonn", "easy" ]

A141338

[ 7, 19, 31, 67, 97, 103, 109, 157, 163, 193, 211, 283, 307, 349, 373, 379, 397, 421, 439, 541, 547, 577, 607, 661, 691, 727, 733, 751, 769, 811, 853, 877, 907, 919, 937, 997, 1033, 1039, 1051, 1063, 1087, 1093, 1117, 1123, 1213, ...

[ "nonn" ]

A229448

[ 17, 47, 128, 324, 753, 1609, 3184, 5890, 10281, 17075, 27176, 41696, 61977, 89613, 126472, 174718, 236833, 315639, 414320, 536444, 685985, 867345, 1085376, 1345402, 1653241, 2015227, 2438232, 2929688, 3497609, 4150613, 4897944, 5749494, 6715825 ]

[ "nonn" ]

A021194

[ 1, 18, 223, 2388, 23809, 228246, 2138131, 19746936, 180745477, 1644848634, 14912475799, 134865314844, 1217706037705, 10982863580382, 98986827702427, 891727782261312, 8030628038119693, 72306120329946690, 650937890891261200, 5859537865552846000, 52742421875166675000 ]

[ "nonn", "easy" ]

A186141

[ 81, 558, 558, 3888, 7686, 3888, 27000, 107874, 107874, 27000, 187704, 1512792, 3090564, 1512792, 187704, 1304424, 21216780, 88110594, 88110594, 21216780, 1304424, 9066168, 297562572, 2513594016, 5108761008, 2513594016, 297562572 ]

[ "nonn", "tabl" ]

A214672

[ 0, 0, 1, 1, 2, 3, 3, 4, 4, 5, 5, 6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 12, 12, 13, 13, 14, 14, 15, 15, 16, 17, 17, 18, 18, 19, 19, 20, 21, 21, 22, 22, 23, 23, 24, 24, 25, 26, 26, 27, 27, 28, 28, 29, 29, 30, 31, ...

[ "nonn" ]

A012943

[ 2, -15, 449, -28721, 3151889, -528627033, 125743579433, -40263668914097, 16699083371803552, -8708208808970478000, 5.576841084485884e+21, -4.302777965593094e+24, 3.9365006955968504e+27 ]

[ "sign" ]

A194318

[ 2, 2, 2, 2, 2, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 2, 3, 3, 2, 1, 1, 3, 3, 1, 2, 3, 2, 1, 2, 3, 1, 2, 3, 1, 2, 3, 1, 2, 2, 1, 3, 2, 2, 3, 1, 3, 1, 2, 2, 2, 2, 2, 3, 1, 3...

[ "nonn", "tabl" ]

A375241

[ 9, 12, 18, 19, 24, 27, 30, 33, 37, 39, 42, 46, 48, 51, 54, 57, 60, 63, 64, 69, 72, 73, 75, 81, 82, 84, 87, 90, 93, 96, 99, 100, 102, 108, 109, 111, 114, 117, 118, 123, 126, 127, 129, 132, 135, 138, 141, 144, 145, 147, ...

[ "nonn", "base", "easy" ]

A018411

[ 1, 3, 7, 17, 21, 51, 119, 357 ]

[ "nonn", "fini", "full", "easy" ]

A109317

[ 1, 1, 2, 6, 22, 94, 446, 2294, 12542, 71974, 429342, 2643606, 16710382, 107980870, 710933118, 4756345750, 32265548622, 221540438502, 1537355395934, 10768777480374, 76063545106670, 541277072787334, 3877624448977150 ]

[ "nonn" ]

A304739

[ 0, 1, 2, 3, 2, 4, 4, 3, 4, 3, 5, 5, 5, 4, 6, 5, 4, 5, 6, 5, 7, 6, 6, 6, 7, 6, 7, 6, 8, 6, 5, 8, 7, 9, 7, 9, 8, 10, 7, 6, 7, 10, 9, 11, 6, 7, 8, 7, 7, 8, 8, 7, 8, 9, 8, 11, 10, 12, 8, 12, 11, 13,...

[ "nonn" ]

A174503

[ 1, 8, 1, 96, 1, 968, 1, 9600, 1, 95048, 1, 940896, 1, 9313928, 1, 92198400, 1, 912670088, 1, 9034502496, 1, 89432354888, 1, 885289046400, 1, 8763458109128, 1, 86749292044896, 1, 858729462339848, 1, 8500545331353600, 1 ]

[ "cofr", "nonn", "easy" ]

A033408

[ 88, 44, 29, 22, 17, 14, 12, 11, 9, 8, 8, 7, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, ...

[ "easy", "nonn" ]

A361531

[ 1, -1, 0, 2, -3, -2, 21, -44, -62, 631, -1367, -3170, 34849, -86855, -302964, 3058342, -8509971, -36488802, 430842051, -1111575888, -6244999438, 78663444549, -250850311489, -1724880111306, 18475299723737, -65061274823853, -444914618968648, 6831921081061986 ]

[ "sign", "easy" ]

A382096

[ 1, 1, 2, 6, 15, 39, 110, 308, 869, 2499, 7238, 21086, 61871, 182523, 540830, 1609238, 4805871, 14398559, 43264896, 130347450, 393650751, 1191441349, 3613345360, 10978726634, 33414836743, 101863289331, 310984519412, 950734751040, 2910319385881, 8919643999157,...

[ "nonn" ]

A134120

[ 16141, 34981, 38501, 39251, 45439, 52391, 58789, 61169, 68821, 75437, 78737, 78989, 81239, 81569, 82657, 84871, 88547, 96601, 97729, 104417, 105277, 108301, 116047, 116747, 117991, 119447, 120431, 121081, 122401, 125821, 126781, 126989 ]

[ "nonn" ]

A123045

[ 0, 2, 6, 12, 39, 104, 366, 1172, 4179, 14572, 52740, 190652, 700274, 2581112, 9591666, 35791472, 134236179, 505290272, 1908947406, 7233629132, 27488079132, 104715393912, 399823554006, 1529755308212, 5864066561554, 22517998136936, 86607703209516 ]

[ "nonn" ]

A206519

[ 11136544, 180689239504, 2933481908580803, 47624714678427760000, 7.731810994726666e+23, 1.2552495871839218e+28, 2.0378815841386797e+32, 3.308474580174075e+36 ]

[ "nonn" ]

A254714

[ 1, 6, 7, 8, 28, 85, 113, 198, 267, 659, 1014, 10224, 13451, 537766, 925036, 1693817, 1803181, 2053555, 11518526, 41877989, 66797547, 90328940, 105345415, 343594795, 654075889, 934979323, 1061368874 ]

[ "nonn" ]

A151264

[ 1, 1, 3, 6, 22, 55, 215, 607, 2465, 7506, 31246, 100251, 424703, 1416068, 6078196, 20874918, 90520934, 318287333, 1391560139, 4987827222, 21954239238, 79959969732, 353939620788, 1306665513502, 5811727596350, 21706525827949, 96945570701577, 365763459361249, 163...

[ "nonn", "walk" ]

A045321

[ 2, 3, 7, 11, 13, 17, 23, 31, 37, 41, 43, 47, 53, 61, 67, 71, 73, 83, 97, 101, 103, 107, 113, 127, 131, 137, 151, 157, 163, 167, 173, 181, 191, 193, 197, 211, 223, 227, 233, 241, 251, 257, 263, 271, 277, 281, 283 ]

[ "nonn", "easy" ]

A367849

[ 1, 1, 2, 1, 3, 1, 1, 4, 1, 1, 2, 5, 3, 1, 1, 4, 6, 1, 1, 5, 1, 1, 7, 1, 6, 1, 1, 2, 1, 8, 7, 1, 1, 2, 1, 3, 1, 9, 4, 1, 1, 2, 5, 3, 1, 1, 10, 6, 1, 1, 2, 1, 3, 7, 1, 4, 11, 1, 1, 5, 8, 1, 1, ...

[ "nonn" ]

A091836

[ 1, 1, 1, 1, 2, 1, 2, 3, 3, 1, 4, 6, 6, 4, 1, 9, 13, 13, 10, 5, 1, 21, 30, 30, 24, 15, 6, 1, 51, 72, 72, 59, 40, 21, 7, 1, 127, 178, 178, 148, 105, 62, 28, 8, 1, 323, 450, 450, 378, 276, 174, 91, 36, 9, 1, 8...

[ "nonn", "tabl" ]

A381307

[ 1, 1, 1, 4, 25, 126, 841, 8303, 84561, 925480, 12285121, 181409427, 2840445169, 49113986936, 932675641353, 18883732449871, 408771283327969, 9499097097870720, 234457146543484220, 6115077874320445000, 168654204908597840000, 4.902220448616468e+21 ]

[ "nonn" ]

A327899

[ 1, 1, 1, 1, 2, 1, 2, 1, 6, 3, 2, 1, 63, 1, 2, 317, 657, 1, 4333, 1, 9609 ]

[ "nonn", "more" ]

A006983

[ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 8, 12, 26, 160, 441, 1152, 3001, 7901, 20566, 54541, 144161, 378197, 990981, 2578081, 6674067, 17086918 ]

[ "nonn", "hard", "more", "nice" ]

A296486

[ 5, 8, 5, 9, 9, 9, 6, 6, 2, 9, 8, 4, 4, 6, 4, 4, 0, 3, 1, 2, 8, 6, 0, 3, 5, 7, 7, 5, 8, 6, 0, 5, 4, 2, 6, 0, 8, 8, 1, 6, 1, 8, 8, 8, 4, 6, 3, 9, 7, 2, 6, 3, 6, 1, 0, 1, 9, 6, 8, 1, 0, 0, 1, 8...

[ "nonn", "easy", "cons" ]

A010615

[ 3, 5, 3, 0, 3, 4, 8, 3, 3, 5, 3, 2, 6, 0, 6, 3, 0, 0, 2, 1, 9, 5, 9, 7, 2, 5, 9, 2, 8, 4, 8, 2, 9, 5, 3, 0, 4, 3, 4, 0, 7, 2, 6, 5, 6, 6, 4, 7, 4, 2, 1, 6, 4, 2, 5, 4, 6, 7, 7, 1, 4, 5, 9, 5...

[ "nonn", "cons" ]

A233840

[ 480071296, 326595297792, 220722832237568, 149185819914631170, 100827647839987840000, 6.814476266564238e+22, 4.605587590682674e+25, 3.1127025414950383e+28 ]

[ "nonn" ]

A259639

[ 236, 813, 3849, 12348, 44500, 182654, 670088, 2436036, 9361060, 35240824, 130549550, 491638762, 1851623400, 6921303290, 25956767494, 97538420980, 365652086782, 1370955967484, 5145436930220, 19301728914022, 72388123438246 ]

[ "nonn" ]

A154252

[ 1, 2, 12, 32, 72, 152, 312, 632, 1272, 2552, 5112, 10232, 20472, 40952, 81912, 163832, 327672, 655352, 1310712, 2621432, 5242872, 10485752, 20971512, 41943032, 83886072, 167772152, 335544312, 671088632, 1342177272, 2684354552, 5368709112, 10737418232 ]

[ "nonn", "easy" ]

A149634

[ 1, 1, 5, 15, 69, 229, 1103, 4123, 20063, 78141, 383261, 1547761, 7628147, 31532753, 155942825, 656344887, 3253277131, 13881923067, 68926594631, 297404679961, 1478590735749, 6437969004419, 32038866205609, 140560828355783, 700049236582825, 3091048262962159, 15404168...

[ "nonn", "walk" ]

A203984

[ 6, 24, 24, 96, 144, 96, 384, 864, 864, 384, 1536, 5184, 7776, 5184, 1536, 6144, 31104, 69984, 69984, 31104, 6144, 24576, 186624, 629856, 956448, 629856, 186624, 24576, 98304, 1119744, 5668704, 13071456, 13071456, 5668704, 1119744, 98304, 393216...

[ "nonn", "tabl" ]

A236005

[ 2960, 41608, 587908, 8623452, 130105204, 2020106076, 32207456576, 526051660468, 8776747793696, 149126416376292, 2572768815952496, 44945537009056720, 793178747691319600, 14111447386534908000, 252672813228732500000 ]

[ "nonn" ]

A120845

[ 2, 10, 23, 50, 117, 300, 823, 2350, 6857, 20240, 60123, 179250, 535597, 1602580, 4799423, 14381750, 43112337, 129271320, 387682723, 1162785850, 3487833077, 10462450460, 31385254023, 94151567550, 282446313817, 847322164000, 2541932937323, 7625731702850, 2287706...

[ "nonn", "easy" ]

A218640

[ 1, 1001, 32689, 1048353, 33546641, 1073471633, 34351030657, 1099232741569, 35175445605065, 1125614194685977, 36019652123390670, 1152628800344096900, 36884119447102423000, 1.1802917530621826e+21, 3.776933388215051e+22 ]

[ "nonn" ]

A003626

[ 11, 13, 17, 19, 31, 37, 53, 59, 71, 73, 79, 97, 113, 131, 137, 139, 151, 157, 173, 179, 191, 193, 197, 199, 211, 233, 239, 251, 257, 271, 277, 293, 311, 313, 317, 331, 337, 353, 359, 373, 379, 397, 419, 431, 433, 439, 457, ...

[ "nonn", "nice" ]

A030146

[ 4, 9, 25, 49, 121, 169, 361, 529, 961, 12769, 16129, 18769, 32761, 72361, 76729, 78961, 96721, 212521, 214369, 436921, 452929, 458329, 1038361, 1630729, 1852321, 3892729, 5230369, 5470921, 5650129, 5812921, 5870929, 7230721 ]

[ "nonn", "base" ]

A098807

[ 2, 4, 6, 8, 10, 12, 14, 18, 20, 24, 28, 30, 34, 36, 38, 40, 42, 48, 50, 54, 60, 64, 66, 68, 72, 78, 80, 84, 90, 94, 96, 98, 102, 104, 108, 110, 114, 120, 124, 126, 132, 134, 138, 144, 150, 154, 156, 162, 164, 168, 17...

[ "easy", "nonn" ]

A158037

[ 1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 13, 14, 15, 17, 18, 19, 20, 21, 22, 23, 24, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, ...

[ "nonn" ]

A263507

[ 8, 48, 204, 770, 2687, 8559, 25383, 71498, 193691, 508996, 1306369, 3291584, 8173381, 20060419, 48777993, 117717414, 282365804, 673959638, 1602152316, 3796140809, 8970338435, 21150183227, 49777148466, 116976012851, 274555052038, 643757239647, 1508176839750, 3530...

[ "nonn" ]

A022470

[ 2, 21, 2111, 2113, 211231, 2112213111, 211222113113, 21122312311231, 2.112223111213112e+21, 2.112233113211131e+25, 2.1122232123121134e+29, 2.112233121112131e+43, 2.1122232112113212e+55 ]

[ "nonn", "base", "easy", "nice" ]

A255075

[ 208, 676, 2444, 8836, 31960, 115600, 418200, 1512900, 5473500, 19802500, 71645000, 259210000, 937825000, 3393062500, 12276187500, 44415562500, 160696875000, 581406250000, 2103546875000, 7610701562500, 27535773437500, 99625351562500 ]

[ "nonn" ]

A380969

[ 0, 1, 3, 13, 47, 307, 2163, 17557, 191807, 1413443, 16485763, 169053487 ]

[ "nonn", "hard", "more" ]

A356109

[ 2, 4, 10, 5996, 8894, 11204, 14290, 23110, 30866, 37594, 43054, 64390, 74554, 83464, 93460, 109456, 111940, 132304, 151904, 184706, 238850, 262630, 265990, 277630, 300206, 315410, 352600, 355450, 376190, 404954, 415180, 462830, 483494, 512354, 5127...

[ "nonn" ]

A089302

[ 1, 1, 1, 2, 3, 1, 5, 10, 6, 1, 14, 36, 32, 11, 1, 43, 137, 164, 89, 20, 1, 144, 551, 835, 627, 235, 37, 1, 523, 2346, 4320, 4166, 2210, 610, 70, 1, 2048, 10568, 22980, 27178, 18764, 7494, 1582, 135, 1, 8597, 50265, 126352,...

[ "nonn", "tabl" ]

A035855

[ 1, 870, 189660, 18502290, 1026829680, 37041354030, 946156012020, 18170467948410, 274296114962940, 3368607034611630, 34588475083615740, 303610009666655360, 2320524189173328000, 15683018934278392000 ]

[ "nonn", "easy" ]

A149076

[ 1, 1, 4, 7, 28, 62, 258, 669, 2872, 8202, 35902, 109484, 486544, 1558474, 7007624, 23310931, 105792634, 362683186, 1658516164, 5827726534, 26818213980, 96192530864, 445026604190, 1624336763598, 7549247734720, 27971272771960, 130514411695862, 489935655695282, 2...

[ "nonn", "walk" ]

A041286

[ 12, 25, 612, 1249, 30588, 62425, 1528788, 3120001, 76408812, 155937625, 3818911812, 7793761249, 190869181788, 389532124825, 9539640177588, 19468812480001, 476791139697612, 973051091875225, 23830017344703012 ]

[ "nonn", "cofr", "frac", "easy" ]

A352659

[ 1, 1, 2, 7, 28, 140, 841, 5887, 47096, 423865, 4238650, 46625150, 559501801, 7273523413, 101829327782, 1527439916731, 24439038667696, 415463657350832, 7478345832314977, 142088570813984560, 2841771416279691300, 59677199741873510000, 1.3128983943212174e+21 ]

[ "nonn" ]

A309858

[ 2, 1, 2, 1, 2, 2, 1, 1, 3, 2, 1, 1, 2, 4, 2, 1, 1, 1, 4, 5, 2, 1, 1, 1, 2, 11, 6, 2, 1, 1, 1, 1, 5, 34, 7, 2, 1, 1, 1, 1, 2, 34, 156, 8, 2, 1, 1, 1, 1, 1, 6, 2136, 1044, 9, 2, 1, 1, 1, 1, 1, 2, ...

[ "nonn", "tabl" ]

A203234

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[ "nonn" ]

A345189

[ 1, 1, 6, 41, 330, 2882, 26604, 255313, 2521986, 25473638, 261898548, 2731724778, 28836047844, 307477681188, 3306988334808, 35833139582529, 390803960909106, 4286644113507902, 47258491871201500, 523372307883323600, 5819831138546794000, 64954314678710560000, 7273717077642323...

[ "nonn" ]