id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A071183
[ 1, 3, 27, 51, 135, 138, 186, 187, 352, 479, 525, 923, 932, 1286, 1578, 1807, 1886, 1926, 2816, 3358, 3438, 5727, 50152, 156816, 204512, 213094, 221368, 255348, 257350, 329046, 403004, 434010, 442520, 449599, 450069, 452430, 457524, 459665 ]
[ "easy", "nonn" ]
A145344
[ 2, 2, 5, 7, 17, 13, 67, 29, 37, 53, 1031, 61, 4099, 193, 149, 127, 65537, 181, 262147, 241, 577, 3079, 4194319, 367, 1297, 12289, 907, 967, 268435459, 727, 1073741827, 853, 9221, 196613, 5189, 1277, 68719476767, 786433, 36871, 1693, 109...
[ "nonn" ]
A197289
[ 2, 3, 2, 6, 3, 6, 4, 7, 7, 0, 8, 0, 3, 2, 6, 3, 4, 9, 8, 1, 9, 2, 2, 6, 9, 2, 0, 1, 8, 9, 0, 3, 3, 9, 2, 9, 9, 8, 4, 8, 0, 7, 3, 7, 1, 1, 6, 1, 9, 4, 6, 7, 1, 0, 7, 7, 4, 7, 8, 1, 3, 1, 3, 8...
[ "nonn", "cons" ]
A107635
[ 1, 3, 3, 4, 9, 12, 15, 21, 30, 43, 54, 69, 94, 123, 153, 193, 252, 318, 391, 486, 609, 754, 918, 1119, 1376, 1680, 2019, 2432, 2946, 3540, 4220, 5034, 6015, 7157, 8463, 9999, 11835, 13956, 16374, 19206, 22542, 26376, 30750, 35829,...
[ "nonn" ]
A098050
[ 1, 1, 1, 1, 1, 1, 2, 1, 1, 4, 2, 1, 1, 8, 5, 2, 1, 1, 16, 11, 6, 2, 1, 1, 32, 25, 14, 7, 2, 1, 1, 64, 57, 35, 17, 8, 2, 1, 1, 128, 130, 86, 46, 20, 9, 2, 1, 1, 256, 296, 212, 119, 58, 23, 10, 2, 1, 1, ...
[ "nonn", "tabf" ]
A257165
[ 1, 2, 4, 8, 16, 22, 44, 88, 176, 183, 186, 204, 224, 248, 296, 305, 310, 320, 352, 387, 425, 450, 495, 544, 598, 657, 714, 728, 756, 812, 824, 906, 996, 1092, 1184, 1195, 1214, 1235, 1258, 1316, 1329, 1358, 1493 ]
[ "nonn", "base" ]
A147717
[ 1, 477638700, 4.629577513083174e+22, 6.93090538757878e+38, 2.8798392787621496e+57 ]
[ "nonn" ]
A157834
[ 3, 5, 7, 13, 15, 23, 27, 33, 35, 37, 43, 55, 65, 75, 77, 93, 103, 105, 117, 127, 133, 147, 153, 155, 163, 167, 205, 215, 225, 247, 253, 257, 275, 285, 287, 293, 295, 303, 313, 323, 337, 363, 365, 405, 427, 433, 435, 475, ...
[ "nonn" ]
A217805
[ 1, 5, 42, 444, 5337, 69657, 962939, 13890083, 207042035 ]
[ "nonn", "more" ]
A268558
[ 1, 2, 8, 34, 182, 1300, 12634, 153598, 2231004, 37250236, 699699968, 14574247086, 333121322514, 8286605836248, 222824153996898, 6439779836400464, 199051769194393730, 6552226226766384000, 228826838199807600000, 8.45033536175038e+21, 3.290024707314731e+23 ]
[ "nonn" ]
A369307
[ 1, 2, 2, 1, 2, 4, 2, 2, 1, 4, 2, 2, 2, 4, 4, 2, 2, 2, 2, 2, 4, 4, 2, 4, 1, 4, 2, 2, 2, 8, 2, 2, 4, 4, 4, 1, 2, 4, 4, 4, 2, 8, 2, 2, 2, 4, 2, 4, 1, 2, 4, 2, 2, 4, 4, 4, 4, 4, 2, 4, 2, 4, 2, 3...
[ "nonn", "easy", "mult" ]
A157663
[ 8040, 16040, 24040, 32040, 40040, 48040, 56040, 64040, 72040, 80040, 88040, 96040, 104040, 112040, 120040, 128040, 136040, 144040, 152040, 160040, 168040, 176040, 184040, 192040, 200040, 208040, 216040, 224040, 232040, 240040, 248040, 256040 ]
[ "nonn", "easy" ]
A341079
[ 5, 19, 29, 41, 61, 149, 241, 409, 421, 541, 1069, 1249, 1381, 1621, 4261, 4621, 4789, 6301, 8269, 12601, 12721, 14449, 16069, 20101, 32029, 33889, 34381, 35281, 38329, 43261, 45061, 60589, 87481, 89989, 97549, 99661, 121081, 125101, 166021,...
[ "nonn" ]
A194063
[ 1, 2, 3, 1, 2, 3, 4, 1, 2, 3, 4, 5, 6, 1, 2, 3, 4, 5, 6, 7, 1, 2, 3, 4, 5, 6, 7, 8, 9, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, ...
[ "nonn" ]
A367229
[ 1905, 15841, 129921, 8322945, 66977281, 4395899025409, 4398012825601, 140735340806145, 36892925197465616000, 2.342736497361113e+21, 4.9517507124085554e+27, 3.9304596247310824e+28, 2.5353011910117258e+30, 1.2980742146242622e+33 ]
[ "nonn" ]
A072581
[ 19, 53, 139, 193, 311, 313, 409, 577, 641, 719, 787, 809, 1033, 1061, 1097, 1171, 1193, 1289, 1627, 1637, 1657, 1669, 1693, 1699, 1747, 1811, 1877, 1889, 2083, 2089, 2153, 2161, 2179, 2203, 2213, 2273, 2311, 2659, 2689, 2753, 3169, 36...
[ "nonn", "base", "easy" ]
A016303
[ 1, -1, 1, -1, 1, -1, 1, -1, 1, -1, 1, -1, 1, -1, 1, -1, 1, -1, 1, -1, 1, -1, 1, -1, 1, -1, 1, -1, 1, -1, 1, 0, 0, 0, 0, 0, 0, 1, -1, 1, -1, 1, -1, 1, -1, 1, -1, 1, -1, 1, -1, 1, -1, 1, -1, 1, -1, 1, -...
[ "sign" ]
A125569
[ 3, 10, 11, 38, 735, 1083, 2063 ]
[ "hard", "more", "nonn" ]
A106352
[ 1, 2, 7, 9, 15, 21, 28, 35, 46, 54, 66, 78, 91, 104, 121, 135, 153, 171, 190, 209, 232, 252, 276, 300, 325, 350, 379, 405, 435, 465, 496, 527, 562, 594, 630, 666, 703, 740, 781, 819, 861, 903, 946, 989, 1036, 1080, 1128, 1...
[ "nonn" ]
A159182
[ 1, 50, 1582, 41180, 971932, 21809989, 477738762, 10377679534, 225792035296 ]
[ "nonn" ]
A295911
[ 8, 25, 76, 229, 688, 2065, 6196, 18589, 55768, 167305, 501916, 1505749, 4517248, 13551745, 40655236, 121965709, 365897128, 1097691385, 3293074156, 9879222469, 29637667408, 88913002225, 266739006676, 800217020029, 2400651060088, 7201953180265 ]
[ "nonn", "easy" ]
A096690
[ 2, 7, 15, 51, 103, 150, 227, 359, 468, 553, 597, 687, 995, 1050, 1355, 1412, 1554, 1620, 1758, 1982, 2058, 2722, 3260, 4167, 5290, 5522, 5904, 6274, 6657, 7886, 8039, 8764, 8909, 9374, 9676, 10307, 10628, 11801, 12847, 16003, 16605, 1...
[ "nonn" ]
A197907
[ 256, 1526, 15242, 106442, 534598, 2091240, 6776037, 18992711, 47486564, 108285671, 228948164, 454458311, 855154436, 1537112039, 2655445796, 4431034439, 7171212836, 11295015911, 17363599364, 26116502471, 38514458564, 55789499111, 79503137636, 111613460039 ]
[ "nonn", "easy" ]
A352716
[ 1, 2, 4, 3, 7, 5, 8, 6, 9, 11, 10, 14, 12, 13, 16, 15, 19, 17, 21, 20, 22, 18, 23, 25, 24, 26, 28, 27, 31, 29, 32, 30, 33, 35, 34, 38, 36, 37, 41, 39, 42, 40, 43, 44, 52, 45, 47, 46, 50, 48, 49, 54, 55, 51, 5...
[ "nonn" ]
A258505
[ 2679, 12156, 56526, 304844, 1627220, 8659189, 46288077, 247098224, 1317234754, 7027083732, 37495141913, 200030678904, 1067066745518, 5692349807117, 30366101605335, 161987364711005, 864111537226175, 4609528214184782 ]
[ "nonn" ]
A134809
[ 101, 103, 107, 109, 307, 401, 409, 503, 509, 601, 607, 701, 709, 809, 907, 11027, 11047, 11057, 11059, 11069, 11071, 11083, 11087, 11093, 12011, 12037, 12041, 12043, 12049, 12071, 12073, 12097, 13033, 13037, 13043, 13049, 13063 ]
[ "nonn", "base" ]
A215172
[ 1, 5, 83, 5319, 1361679, 1394359327, 5711295803455, 93573870443806850, 6.132457173405326e+21, 1.6075868532651657e+27, 1.6856769922493744e+33, 7.07024175129952e+39 ]
[ "nonn", "base" ]
A373384
[ 6, 15, 27, 33, 36, 42, 48, 51, 69, 78, 87, 90, 105, 114, 120, 123, 141, 159, 162, 177, 186, 189, 195, 198, 213, 216, 222, 225, 231, 249, 252, 258, 264, 267, 285, 288, 294, 300, 303, 306, 321, 336, 339, 351, 357, 366, 384, ...
[ "nonn" ]
A059985
[ 0, 1, 3, 4, 9, 10, 13, 14, 18, 33, 34, 37, 38, 42, 51, 52, 55, 56, 60, 73, 74, 78, 96, 153, 154, 157, 158, 162, 171, 172, 175, 176, 180, 193, 194, 198, 216, 249, 250, 253, 254, 258, 267, 268, 271, 272, 276, 289, 290, 2...
[ "nonn", "base" ]
A070800
[ 2, 3, 3, 5, 3, 7, 5, 7, 5, 11, 5, 13, 7, 11, 11, 17, 7, 19, 11, 13, 11, 23, 11, 23, 13, 19, 13, 29, 11, 31, 17, 23, 17, 29, 13, 37, 19, 29, 17, 41, 13, 43, 23, 29, 23, 47, 17, 43, 23, 37, 29, 53, 19, 41, 29, ...
[ "easy", "nonn" ]
A162972
[ 1, 2, 9, 38, 210, 1339, 9870, 82368, 768432, 7926903, 89610070, 1101767732, 14639237184, 209048293375, 3192959638778, 51943905125760, 896723236236864, 16373101528868944, 315259605244694600, 6384318171252621000, 135651088007338900000, 3.017472066675257e+21 ]
[ "nonn" ]
A116297
[ 2, 5, 43, 54, 38161, 61836, 83616, 346978, 653019, 950049, 8647553, 9534263, 8167822281, 9007920990, 9209900790, 9950000499, 4737445289219, 4990568257185, 5009431742812, 5262554710778, 8373808925583 ]
[ "nonn", "base" ]
A002563
[ 1, 1, 1, 3, 37, 1, 13, 638, 21, 1, 1, 1, 41, 588, 25872, 43, 22, 2 ]
[ "nonn", "more" ]
A310001
[ 1, 3, 4, 6, 10, 13, 16, 16, 20, 28, 24, 25, 30, 33, 34, 36, 42, 45, 43, 52, 53, 56, 50, 59, 66, 63, 60, 69, 72, 77, 72, 81, 82, 86, 88, 90, 90, 93, 94, 108, 98, 103, 106, 113, 112, 113, 116, 122, 117, 132 ]
[ "nonn" ]
A260204
[ 478, 1163, 5291, 20408, 85168, 359112, 1473681, 6100163, 25364416, 104948864, 434706199, 1802333006, 7466572837, 30934888195, 128194824496, 531166886817, 2200852469405, 9119511470498, 37786992254965, 156570849928658 ]
[ "nonn" ]
A035383
[ 0, 1, 25, 36, 625, 5776, 141376, 390625, 87909376, 8212890625, 11963109376, 793212890625, 8355712890625, 50543227109376, 166168212890625, 7588043387109376, 45322418212890620, 619541169787109400 ]
[ "nonn", "base" ]
A109297
[ 1, 2, 9, 12, 18, 40, 112, 125, 250, 352, 360, 540, 600, 675, 832, 1008, 1125, 1350, 1500, 2176, 2250, 2268, 2352, 2401, 3168, 3969, 4802, 4864, 7488, 7938, 10692, 11616, 11776, 14000, 19584, 21609, 27440, 28812, 29403, 29696, 32448, 3...
[ "nonn" ]
A215341
[ 1, 0, 0, 0, 1, 1, 1, 1, 5, 10, 16, 23, 53, 118, 232, 411, 813, 1718, 3568, 7012, 13925, 28603, 59533, 121878, 247915, 509136, 1057278, 2194138, 4536943, 9394145, 19552639, 40803472, 85131237, 177640486, 371426592, 778275264, 1632420197, 34256...
[ "nonn" ]
A035247
[ 1, 3, 4, 5, 9, 11, 12, 15, 16, 20, 23, 25, 27, 31, 33, 36, 37, 44, 45, 47, 48, 49, 53, 55, 59, 60, 64, 67, 69, 71, 75, 80, 81, 89, 92, 93, 97, 99, 100, 103, 108, 111, 113, 115, 121, 124, 125, 132, 135, 137, 141, 14...
[ "nonn" ]
A012996
[ 1, -4, 88, -5110, 553160, -96580250, 24721393700, -8728515353350, 4063560953062000, -2412185091080859000, 1.7781461829824935e+21, -1.5936284849990438e+24, 1.7064818815164108e+27 ]
[ "sign" ]
A348279
[ 0, 2, 3, 18, 5, 35, 7, 114, 57, 77, 11, 243, 13, 135, 128, 626, 17, 467, 19, 573, 220, 299, 23, 1395, 255, 405, 786, 1047, 29, 1160, 31, 3186, 476, 665, 432, 2835, 37, 819, 640, 3389, 41, 2100, 43, 2427, 1937, 1175, 47, 72...
[ "nonn" ]
A258152
[ 1, 1, 4, 1, 18, 27, 1, 32, 36, 288, 256, 1, 50, 200, 750, 1500, 5000, 3125, 1, 72, 450, 400, 1620, 10800, 3375, 17280, 48600, 97200, 46656, 1, 98, 882, 2450, 3087, 30870, 25725, 46305, 48020, 432180, 259308, 420175, 1512630, 2117682...
[ "nonn", "easy", "tabf" ]
A348419
[ 1, 4, 12, 9, 192, 180, 16, 1200, 6480, 2800, 25, 4800, 79380, 179200, 44100, 36, 14700, 564480, 3628800, 4410000, 698544, 49, 37632, 2857680, 40320000, 133402500, 100590336, 11099088, 64, 84672, 11430720, 304920000, 2134440000, 4249941696, 21754212...
[ "nonn", "tabl" ]
A364165
[ 11, 23, 7, 827, 41, 19, 7, 1282187, 2566561, 1163, 7, 79, 41, 167, 7, 11, 17, 17, 7, 29, 41, 209715210460353200, 7, 838860894143178900, 2566561, 11, 7, 35393, 29, 179, 7, 19, 673, 8.589934592555906e+25, 7, 47, 41, 29, 7, 661, 5441, 79...
[ "nonn", "base" ]
A194935
[ 2097152, 43337009, 136403494, 248381815, 364130672, 480403525, 596729942, 713059915, 829390016, 945720119, 1062050222, 1178380325, 1294710428, 1411040531, 1527370634, 1643700737, 1760030840, 1876360943, 1992691046 ]
[ "nonn" ]
A368424
[ 4, 11, 18, 20, 23, 28, 35, 43, 48, 52, 83, 95, 100, 119, 131, 138, 148, 155, 162, 166, 172, 179, 191, 196, 204, 210, 214, 239, 251, 253, 268, 292, 299, 300, 316, 323, 342, 359, 371, 378, 388, 419, 431, 443, 460, 463, 491, ...
[ "nonn" ]
A166939
[ 2, 7, 29, 73, 437, 169, 1343, 3001, 29809, 32581, 388631, 418661, 5830673, 6216773, 6601157, 13968079, 250430303, 87787741, 1749648679, 366225215, 127494581, 132902893, 3180922571, 9914589163, 257145392467, 266412327067, 2480998948403, 2564180718503 ]
[ "nonn", "frac" ]
A134853
[ 1, 2, 3, 4, 5, 6, 7, 8, 9, 120, 121, 130, 131, 132, 140, 141, 142, 143, 150, 151, 152, 153, 154, 160, 161, 162, 163, 164, 165, 170, 171, 172, 173, 174, 175, 176, 180, 181, 182, 183, 184, 185, 186, 187, 190, 191, 192, 193, ...
[ "base", "fini", "nonn" ]
A308388
[ 2, 3, 5, 7, 10, 14, 15, 21, 26, 34, 35, 38, 39, 46, 51, 57, 58, 62, 65, 69, 74, 82, 85, 86, 87, 91, 93, 94, 95, 102, 105, 116, 117, 130, 138, 154, 165, 170, 171, 174, 182, 186, 188, 190, 195, 212, 230, 231, 238, 242, ...
[ "nonn", "base" ]
A265808
[ 5, 13, 19, 31, 37, 53, 97, 191, 223, 757, 977, 4483, 5237, 9497, 14423, 18061, 30841, 45751, 47881, 60661, 137341, 162901, 177811, 536273, 557573, 577453, 579583, 609403, 610823, 833719, 43354453, 45230587, 104426411, 111304859, 120059441, 185091...
[ "nonn", "frac" ]
A355934
[ 1, 3, 2, 7, 3, 1, 2, 3, 13, 9, 6, 14, 7, 1, 1, 31, 9, 39, 5, 21, 4, 9, 4, 1, 31, 7, 10, 14, 15, 3, 16, 9, 4, 27, 1, 7, 19, 5, 14, 9, 21, 1, 11, 6, 39, 3, 8, 62, 3, 31, 3, 49, 9, 5, 9, 1, 5, 45, 30, ...
[ "nonn", "frac" ]
A268793
[ 12, 78, 248, 950, 3384, 11948, 41248, 140698, 474472, 1586038, 5262024, 17348096, 56884272, 185647624, 603388088, 1953997896, 6307338900, 20300666174, 65169102416, 208712267048, 666993883320, 2127375490930, 6773070493400 ]
[ "nonn" ]
A135029
[ 19, 46, 55, 145, 361, 451, 20251 ]
[ "base", "nonn" ]
A052758
[ 0, 0, 0, 0, 24, 180, 1260, 9450, 77952, 709128, 7087440, 77398200, 918257472, 11771602128, 162251002368, 2393704535040, 37647052591104, 628913396701440, 11123162442408960, 207662678687208960 ]
[ "easy", "nonn" ]
A163455
[ 1, 4, 36, 364, 3876, 42504, 475020, 5379616, 61523748, 708930508, 8217822536, 95722852680, 1119487075980, 13136858812224, 154603005527328, 1824010149372864, 21566576904406820, 255485622301674660, 3031718514166879000, 36030431772522504000, 428786696323047750000 ]
[ "nonn", "easy" ]
A031083
[ 6, 22, 40, 58, 76, 94, 99, 101, 103, 105, 107, 109, 111, 112, 113, 115, 130, 148, 173, 200, 227, 254, 281, 308, 316, 319, 322, 325, 328, 331, 334, 335, 337, 340, 362, 389, 416, 443, 470, 497, 524, 551, 559, 562, 565, 568, 57...
[ "nonn" ]
A100950
[ 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 3, 0, 2, 1, 1, 1, 5, 0, 2, 1, 2, 2, 4, 0, 3, 3, 5, 3, 4, 0, 2, 4, 4, 2, 4, 1, 5, 6, 3, 3, 6, 1, 4, 4, 6, 5, 4, 2, 4, 4, 7, 6, 6, 3, 3, 6, 7, 6, 4, 1, 3, 10, 7, ...
[ "nonn" ]
A273193
[ 1, 2, -16, 904, -25792, 971936, -135875584, 7531512832, -483853915136, 318210896625152, -26070230641872896, 2367374418301892600, -708155254090757300000, 7.69281883535011e+22, -9.044296958948501e+24, 3.432739126498593e+27, -4.6504155294036646e+29 ]
[ "sign", "frac" ]
A390667
[ 1, 1, 5, 57, 1169, 37673, 1749541, 110331249, 9051479425, 935328762865, 118718609669285, 18140541415043530, 3282534627872283000, 693795240948153800000, 1.69301519678057e+23, 4.722328516574189e+25, 1.4926103568202657e+28, 5.305482652114246e+30, 2.1065297444131583e+33 ]
[ "nonn", "new" ]
A037002
[ 9, 15, 17, 24, 25, 27, 43, 46, 64, 86, 91, 111, 115, 123, 137, 142, 170, 194, 196, 215, 216, 230, 231, 237, 261, 265, 274, 282, 283, 285, 300, 313, 346, 349, 358, 364, 365, 368, 382, 401, 402, 409, 420, 430, 434, 441, 457, ...
[ "nonn", "base" ]
A083596
[ 1, 7, 21, 63, 189, 567, 1701, 5103, 15309, 45927, 137781, 413343, 1240029, 3720087 ]
[ "dead" ]
A054351
[ 1, 12, 1221, 1221121, 12211212212, 122112122122112110, 1.2211212212211211e+27, 1.2211212212211212e+42, 1.2211212212211211e+64 ]
[ "nonn", "easy" ]
A182177
[ 0, 2, 1, 4, 3, 8, 5, 6, 7, 41, 11, 12, 9, 20, 21, 14, 16, 50, 23, 25, 29, 43, 47, 49, 83, 85, 61, 65, 67, 411, 111, 112, 30, 32, 34, 38, 52, 56, 58, 92, 94, 70, 74, 76, 114, 98, 302, 116, 120, 202, 121, 123, 89, ...
[ "nonn", "base", "easy" ]
A324163
[ 1, 0, 1, 0, 0, 1, 0, 0, 3, 1, 0, 0, 12, 0, 1, 0, 0, 60, 70, 15, 1, 0, 0, 360, 0, 465, 0, 1, 0, 0, 2520, 19320, 19355, 3507, 105, 1, 0, 0, 20160, 0, 1024380, 0, 30016, 0, 1, 0, 0, 181440, 11166120, 66462480, 66462606,...
[ "nonn", "tabl" ]
A087235
[ 8, 33, 120, 360, 1134, 3094, 8472, 24300, 64720, 175197, 481452, 1304719, 3524654, 9560100, 25874784, 70119985, 189969354, 514278263, 1394199300, 3779856633, 10246936436, 27788573803, 75370126416, 204475055200, 554805820556, 1505578026105, 4086199303004, 1109150...
[ "nonn" ]
A130053
[ 1, 2, 3, 5, 7, 10, 14, 18, 23, 29, 36, 44, 52, 61, 71, 82, 94, 107, 121, 136, 152, 168, 185, 203, 222, 242, 263, 285, 308, 332, 357, 383, 410, 438, 467, 497, 528, 560, 592, 625, 659, 694, 730, 767, 805, 844, 884, 925, 96...
[ "nonn" ]
A178450
[ 1, -3, -4, 4, -6, 12, -8, -6, 6, 18, -12, -16, -14, 24, 24, 8, -18, -18, -20, -24, 32, 36, -24, 24, 10, 42, -12, -32, -30, -72, -32, -12, 48, 54, 48, 24, -38, 60, 56, 36, -42, -96, -44, -48, -36, 72, -48, -32, 14, -30,...
[ "sign", "easy", "mult" ]
A023591
[ 1, 1, 1, 1, 1, 3, 1, 1, 1, 1, 2, 2, 1, 1, 1, 1, 1, 1, 3, 1, 2, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 2, 2, 1, 1, 2, 1, 1, 1, 1, 2, 1, 2, 1, 1, 2, 1, 1, 3, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 4, 1, 1, 1...
[ "nonn" ]
A332325
[ 3, 4, 4, 4, 4, 5, 4, 4, 4, 4, 5, 4, 4, 5, 4, 4, 4, 4, 5, 4, 4, 5, 4, 4, 5, 4, 4, 4, 4, 5, 4, 4, 5, 4, 4, 4, 4, 5, 4, 4, 5, 4, 4, 5, 4, 4, 4, 4, 5, 4, 4, 5, 4, 4, 4, 4, 5, 4, 4, 5, 4, 4, 5, 4...
[ "nonn" ]
A167336
[ 1, 18, 26, 324, 42, 468, 58, 5832, 676, 756, 90, 8424, 106, 1044, 1092, 104976, 138, 12168, 154, 13608, 1508, 1620, 186, 151632, 1764, 1908, 17576, 18792, 234, 19656, 250, 1889568, 2340, 2484, 2436, 219024, 298, 2772, 2756, 244944, 330,...
[ "nonn", "easy", "mult" ]
A085218
[ 0, 1, 1, 120, 121, 120, 121, 4210, 4021, 121, 310, 4211, 122010, 4211, 310, 311, 10000, 122011, 131100, 13111, 311, 4020, 10001, 122200, 131101, 243300, 13301, 4020, 4021, 130310, 122201, 131220, 243301, 252320, 121221, 4021, 4210, 130311 ]
[ "nonn", "tabl", "base", "fini" ]
A349148
[ 1, 1, 2, 3, 6, 9, 25, 39, 84, 158, 381, 610, 2175, 3489, 7252, 24744, 54658, 89031, 273604, 443746, 1690517, 5261990, 9399018, 15470605, 58261863, 102574465 ]
[ "nonn", "more" ]
A253161
[ 3844, 46752, 555842, 7252320, 92998506, 1190692584, 15179218714, 194198939906, 2482220834294, 31740256495626, 405683545431502, 5186473593590730, 66301707444606536, 847604837440730500, 10835407210226373000 ]
[ "nonn" ]
A051275
[ 1, 0, 2, 1, 2, 2, 3, 2, 4, 3, 4, 4, 5, 4, 6, 5, 6, 6, 7, 6, 8, 7, 8, 8, 9, 8, 10, 9, 10, 10, 11, 10, 12, 11, 12, 12, 13, 12, 14, 13, 14, 14, 15, 14, 16, 15, 16, 16, 17, 16, 18, 17, 18, 18, 19, 18, 20, 1...
[ "nonn", "easy" ]
A218541
[ 1, 1, 1, 1, 1, 2, 1, 1, 2, 2, 2, 1, 1, 2, 2, 2, 1, 2, 2, 3, 1, 1, 2, 2, 2, 1, 2, 2, 3, 1, 2, 2, 2, 2, 2, 2, 3, 1, 1, 2, 2, 2, 1, 2, 2, 3, 1, 2, 2, 2, 2, 2, 2, 3, 1, 2, 2, 2, 2, 3, 3, 2, 3, 3...
[ "nonn" ]
A121121
[ 0, 1, 3, 26, 189, 1616, 13768, 120362, 1061728, 9465862, 85081948, 770462984, 7022416575, 64379117809, 593274806744, 5492772010760, 51068576080156, 476618665123679, 4463690012729765, 41936482657939784, 395139186154221700, 3733076854264478700 ]
[ "nonn" ]
A307400
[ 1, 1, 2, 9, 28, 109, 440, 1790, 7537, 32300, 140438, 618608, 2753510, 12366672, 55973926, 255059808, 1169143476, 5387268256, 24940059514, 115943355422, 541047868905, 2533458659581, 11900017205866, 56055896316345, 264748474342341, 1253414056154014, 5947373587731308...
[ "nonn" ]
A185008
[ 4, 14, 21, 33, 46, 51, 62, 74, 82, 91, 106, 111, 121, 133, 141, 155, 161, 177, 183, 194, 201, 213, 221, 235, 247, 253, 262, 274, 287, 291, 301, 314, 321, 334, 341, 355, 361, 371, 381, 391, 403, 411, 422, 437, 445, 451, 466, ...
[ "nonn", "easy" ]
A376258
[ 5, 4, 9, 5, 0, 2, 1, 7, 7, 7, 6, 4, 2, 0, 1, 5, 4, 3, 1, 4, 4, 4, 5, 6, 5, 4, 6, 8, 7, 6, 3, 8, 4, 9, 4, 6, 5, 2, 1, 3, 7, 1, 8, 6, 5, 0, 2, 9, 0, 0, 1, 7, 2, 3, 6, 7, 2, 5, 1, 6, 8, 2, 6, 1...
[ "nonn", "cons" ]
A214411
[ 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0...
[ "nonn", "easy" ]
A291926
[ 1, 5, 0, 18, 25, 20, 0, 61, 68, 64, 72, 103, 110, 134, 0, 138, 141, 140, 141, 172, 191, 228, 225, 244, 306, 281, 272, 339, 384, 412, 0, 390, 421, 372, 472, 395, 441, 486, 495, 473, 566, 576, 629, 735, 626, 661, 706, 707, ...
[ "nonn", "base" ]
A319684
[ 0, 1, 1, 5, 1, 7, 1, 17, 7, 9, 1, 27, 1, 11, 10, 49, 1, 34, 1, 37, 12, 15, 1, 83, 11, 17, 34, 47, 1, 54, 1, 129, 16, 21, 14, 114, 1, 23, 18, 117, 1, 68, 1, 67, 55, 27, 1, 227, 15, 64, 22, 77, 1, 142, 18, 15...
[ "nonn" ]
A212701
[ 6, 84, 882, 8232, 72030, 605052, 4941258, 39530064, 311299254, 2421216420, 18643366434, 142367525496, 1079620401678, 8138676874188, 61040076556410, 455765904954528, 3389758918099302, 25124095510618356, 185639150161791200, 1367867422244777200, 10053825553499111000 ]
[ "nonn", "easy" ]
A245481
[ 1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 169, 338, 507, 676, 1014, 2028, 2197, 4394, 6591, 8788, 13182, 26364, 28561, 57122, 85683, 114244, 171366, 342732, 371293, 742586, 1113879, 1485172, 2227758, 4455516, 4826809, 9653618, 14480427, ...
[ "nonn", "easy" ]
A000543
[ 0, 1, 23, 333, 2916, 16725, 70911, 241913, 701968, 1798281, 4173775, 8942021, 17930628, 34009053, 61518471, 106823025, 179003456, 290715793, 459239463, 707740861, 1066780100, 1576090341, 2286660783, 3263156073, 4586706576 ]
[ "nonn", "easy" ]
A167699
[ 1, 28, 756, 20412, 551124, 14880348, 401769396, 10847773692, 292889889684, 7908027021468, 213516729579636, 5764951698650172, 155653695863554660, 4202649788315975000, 113471544284531340000, 3.063731695682346e+21 ]
[ "nonn" ]
A204906
[ 2, 6, 4, 8, 6, 2, 12, 10, 6, 4, 14, 12, 8, 6, 2, 18, 16, 12, 10, 6, 4, 24, 22, 18, 16, 12, 10, 6, 26, 24, 20, 18, 14, 12, 8, 2, 32, 30, 26, 24, 20, 18, 14, 8, 6, 36, 34, 30, 28, 24, 22, 18, 12, 10, 4, 38, ...
[ "nonn" ]
A264046
[ 15, 123, 365, 371, 505, 545, 573, 591, 649, 707, 807, 843, 943, 1067, 1159, 1247, 1357, 1405, 1529, 1555, 1633, 1739, 1745, 1829, 1843, 1897, 1909, 1985, 2149, 2159, 2209, 2285, 2329, 2353, 2363, 2407, 2413, 2463, 2501, 2643, 2773, 27...
[ "nonn" ]
A346311
[ 0, 0, 0, 1, 2, 4, 6, 8, 12, 16, 20, 26 ]
[ "nonn", "more" ]
A005958
[ 1, 2, 4, 10, 25, 64, 172, 472, 1319, 3750, 10796, 31416, 92276, 273172, 814246, 2441688, 7360877, 22295746, 67819576, 207083944, 634512581, 1950301202, 6011920720, 18581123978, 57568802820, 178763375468, 556255762692, 1734248037856 ]
[ "nonn" ]
A156326
[ 1, 1, 5, 58, 1181, 36696, 1601497, 92969920, 6908883417, 638746871680, 71860612355981, 9664570175364864, 1531263494465900800, 282321785979644120000, 5.993566375128296e+22, 1.4517627118656645e+25, 3.980008380007703e+27, 1.2261899305610238e+30 ]
[ "nonn" ]
A231229
[ 1, 2, 11, 96, 1117, 16226, 282503, 5732736, 132852169, 3461582882, 100170007859, 3187366835040, 110607201645061, 4157078373725762, 168223595493553860, 7292428324945553000, 337148168449629550000, 1.6559308764450705e+22, 8.610701298286689e+23 ]
[ "nonn" ]
A115124
[ 0, 0, 1, 1, 2, 1, 4, 1, 7, 3, 14, 1, 40, 1, 86, 15, 257, 1, 797, 1, 2523, 87, 8360, 1, 29218, 13, 101341, 765, 361275, 1, 1300415, 1, 4707969, 8361, 17179436, 97, 63097809, 1, 232615772, 101342, 861726044, 1, 3204597995, 1, 1195...
[ "easy", "nonn" ]
A342764
[ 1, 1, 2, 4, 7, 13, 26, 51, 97, 191, 366, 713, 1375, 2673, 5164, 10031, 19405, 37663, 72922, 141461, 274019, 531405, 1029640, 1996395, 3868793, 7500411, 14536342, 28179521, 54617039 ]
[ "nonn", "more" ]
A381188
[ 1, 4, 13, 92, 1359 ]
[ "nonn", "more" ]
A046220
[ 1, 2, 3, 5, 7, 11, 9, 27, 20, 13, 19, 67, 40, 15, 51, 105, 147, 17, 33, 78, 126, 83, 111, 204, 273, 21, 305, 315, 477, 546, 23, 123, 407, 935, 792, 1023, 25, 73, 265, 671, 2519, 1815, 2046, 171, 338, 936, 3861, 6149, 29,...
[ "tabf", "nonn", "easy" ]
A362810
[ 0, 0, 1, 6, 30, 173, 1138, 8386, 67951, 596745, 5618916, 56249658, 594648335, 6602123630, 76631632344, 926329705808, 11623455427764, 150970962492188, 2024773236657401, 27980260971851304, 397645587914766100, 5801999753304429000, 86784442260270600000, 1.3289242965057898e+...
[ "nonn" ]
A254213
[ 2, 0, 3, 4, 8, 6, 15, 18, 45, 118, 553, 1706, 2845, 2970, 4470, 9426, 30908, 115084, 350693, 804152, 1724453, 3598260, 6467166, 12292306, 36973565, 137754308, 493838258, 1570992174, 4107583256, 8556975584, 14790344176, 23129972292 ]
[ "nonn" ]
A006191
[ 1, 2, 5, 16, 54, 180, 595, 1964, 6485, 21418, 70740, 233640, 771661, 2548622, 8417525, 27801196, 91821114, 303264540, 1001614735, 3308108744, 10925940965, 36085931638, 119183735880, 393637139280, 1300095153721, 4293922600442 ]
[ "nonn", "walk", "easy" ]
A240716
[ 1, 5, 7, 13, 17, 23, 25, 35, 37, 55, 61, 91, 95, 101, 121, 131, 137, 143, 161, 175, 187, 221, 233, 245, 257, 271, 311, 335, 391, 395, 397, 443, 445, 451, 461, 475, 511, 527, 545, 557, 577, 583, 641, 653, 683, 685, 703, 737...
[ "nonn" ]