id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A115229
[ 3, 12, 16, 31, 21, 44, 3, 6 ]
[ "nonn" ]
A232214
[ 6, 192, 10170, 834612, 90939630, 12360636540, 2012440468938, 381799921738584, 82715137744491980, 20148082438597538000, 5.450721437848286e+21, 1.6215354252127314e+24, 5.261126948589738e+26, 1.848874700164452e+29, 6.996035969416229e+31 ]
[ "nonn" ]
A179435
[ 40, 48, 54, 88, 108, 184, 250, 384, 424, 432, 448, 808, 864, 1048, 1216, 1384, 1528, 1575, 1680, 1792, 1864, 1890, 2104, 2184, 2457, 2925, 2944, 3080, 3120, 3328, 3510, 3696, 3712, 3915, 4125, 4158, 4288, 4504, 4744, 4950, 5224, 5488,...
[ "nonn" ]
A228547
[ 5, 36985, 273615025, 2024203917965, 14975060311490044, 110785494160199430000, 8.195910708220951e+23, 6.063334631156365e+27, 4.4856548781703725e+31, 3.318487418237095e+35 ]
[ "nonn", "easy" ]
A057642
[ 1, 5, 28, 1284, 3126, 6485292, 823544, 21541946368, 10847773719, 156290000012500, 285311670612, 1.4847746691430173e+22, 302875106592254, 4.575612163372993e+22, 3.832753854336548e+22, 3.97378771500073e+29, 827240261886336800000 ]
[ "nonn" ]
A194010
[ 2, 5, 3, 13, 7, 4, 28, 17, 9, 5, 58, 35, 21, 11, 6, 114, 70, 42, 25, 13, 7, 218, 134, 82, 49, 29, 15, 8, 407, 251, 154, 94, 56, 33, 17, 9, 747, 461, 284, 174, 106, 63, 37, 19, 10, 1352, 835, 515, 317, 194, 118, 70,...
[ "nonn", "tabl" ]
A144019
[ 1, 2, 1, 5, 2, 3, 12, 5, 6, 10, 29, 12, 15, 20, 33, 70, 29, 36, 50, 66, 109, 169, 70, 87, 120, 165, 218, 360, 408, 169, 210, 290, 396, 545, 720, 1189, 985, 408, 507, 700, 957, 1308, 1800, 2378, 3927 ]
[ "nonn", "tabl" ]
A228720
[ 1, 2, 2, 3, 3, 4, 4, 5, 5, 5, 5, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 8, 8, 9, 9, 9, 9, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 12, 12, 12, 12, 13, 13, 13, 13, 13, 13, 13, 13, 14, 14, 1...
[ "nonn" ]
A098377
[ 1, 3, 4, 11, 12, 25, 22, 39, 40, 57, 58, 89, 78, 115, 112, 141, 142, 183, 182, 225, 226, 269, 252, 319, 312, 365, 364, 423, 422, 487, 474, 559, 534, 629, 600, 701, 680, 759, 758, 849, 842, 935, 912, 1025, 1008, 1117, 1100, ...
[ "nonn" ]
A094966
[ 0, 1, 1, 3, 3, 8, 8, 21, 21, 55, 55, 144, 144, 377, 377, 987, 987, 2584, 2584, 6765, 6765, 17711, 17711, 46368, 46368, 121393, 121393, 317811, 317811, 832040, 832040, 2178309, 2178309, 5702887, 5702887, 14930352, 14930352, 39088169, 3908816...
[ "easy", "less", "nonn" ]
A204923
[ 1, 2, 5, 4, 9, 8, 7, 14, 18, 13, 12, 11, 20, 34, 60, 19, 35, 18, 17, 16, 27, 37, 58, 65, 32, 26, 29, 40, 25, 128, 24, 23, 22, 35, 191, 65, 87, 42, 141, 131, 52, 34, 39, 37, 60, 58, 33, 65, 74, 32, 128, 31, 30, ...
[ "nonn" ]
A182707
[ 0, 1, 4, 11, 23, 46, 80, 138, 221, 351, 529, 801, 1161, 1685, 2380, 3355, 4624, 6375, 8623, 11658, 15538, 20664, 27163, 35660, 46330, 60082, 77288, 99197, 126418, 160802, 203246, 256381, 321700, 402781, 501962, 624332, 773235, 955776, 11770...
[ "nonn", "easy" ]
A222807
[ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 10, 30, 66, 144, 314, 692, 1452, 3046, 6388, 13298, 27274, 56164, 113672, 231892, 470984, 950178, 1912700, 3868034, 7772172, 15651674, 31464544, 63154106, 126603428, 254088618, 508541874, 101...
[ "nonn" ]
A039351
[ 37, 44, 101, 108, 165, 172, 229, 236, 261, 269, 277, 285, 296, 297, 298, 299, 302, 303, 309, 317, 324, 332, 340, 348, 352, 353, 354, 355, 358, 359, 372, 380, 421, 428, 485, 492, 549, 556, 613, 620, 677, 684, 741, 748, 773, 781...
[ "nonn", "base", "easy" ]
A106729
[ 5, 10, 25, 65, 170, 445, 1165, 3050, 7985, 20905, 54730, 143285, 375125, 982090, 2571145, 6731345, 17622890, 46137325, 120789085, 316229930, 827900705, 2167472185, 5674515850, 14856075365, 38893710245, 101825055370, 266581455865 ]
[ "nonn", "easy" ]
A295764
[ 1, 2, 8, 84, 1522, 38940, 1278880, 51136512, 2407921070, 130495143060, 8002598818976, 548083639109204, 41481408076217480, 3439242379130298400, 310088460754461400000, 3.0213233395705565e+22, 3.164041937175571e+24, 3.5445817475580915e+26, 4.230158375498909e+28, 5.358139267082653e...
[ "nonn" ]
A129919
[ 5, 13, 19, 29, 37, 47, 131, 157, 139, 277, 179, 283, 127, 137, 577, 643, 181, 463, 919, 509, 389, 577, 439, 283, 1511, 307, 317, 761, 787, 367, 389, 953, 971, 1033, 3169, 1093, 809, 1499, 859, 3037, 541, 563, 577, 587, 1789, 2...
[ "nonn" ]
A076308
[ 3, 5, 4, 5, 3, 8, 5, 2, 5, 8, 5, 1, 5, 9, 4, 9, 8, 9, 4, 8, 7, 3, 8, 2, 9, 2, 2, 2, 2, 7, 0, 6, 4, 4, 7, 2, 3, 5, 0, 9, 7, 2, 0, 1, 7, 7, 7, 5, 4, 7, 8, 6, 9, 0, 1, 8, 9, 7, 3, 3, 8, 5, 1, 4...
[ "nonn", "base" ]
A141941
[ 43, 193, 293, 443, 593, 643, 743, 1093, 1193, 1493, 1543, 1693, 1993, 2143, 2243, 2293, 2393, 2543, 2593, 2693, 2843, 3343, 3593, 3643, 3793, 3943, 4093, 4243, 4493, 4643, 4793, 4943, 4993, 5393, 5443, 5693, 5743, 5843, 6043, 6143, 6343...
[ "nonn", "easy" ]
A339963
[ 21, 33, 45, 57, 69, 85, 93, 105, 117, 129, 133, 141, 145, 153, 165, 177, 201, 205, 213, 217, 237, 249, 253, 261, 265, 273, 285, 297, 301, 309, 321, 325, 333, 345, 357, 369, 381, 385, 393, 405, 417, 429, 445, 453, 465, 469, 4...
[ "nonn" ]
A119071
[ 45, 55, 4005, 5050, 404550, 405450, 500500, 40405555, 40504500, 50005000, 454044045, 500054500, 4050045000, 4540044405, 5000050000, 405000450000, 455005054540, 500000500000, 40500004500000, 50000005000000, 50450455004040, 540550504445050, 4050000045000000 ]
[ "nonn", "base" ]
A387474
[ 3, 47, 107, 157, 4799, 21841 ]
[ "nonn", "hard", "more" ]
A264533
[ 1, 16, 673, 15028, 634896, 15187422, 434877820, 12164306720, 324326909569, 8774823585744, 234456940197397, 6265839804921197, 166204669209067420, 4417764189776673300, 116848264132458500000, 3.0931816077317395e+21 ]
[ "nonn" ]
A090136
[ 1, 5, 45, 585, 9961, 210061, 5289845, 155026705, 5186652945, 195165726101, 8161532936701, 375619788842585, 18871026734111864, 1027821645714667800, 60331977158792905000, 3.7971718482032093e+21, 2.551000159251276e+23 ]
[ "nonn" ]
A266745
[ 1, 1, 1, 2, 2, 4, 5, 6, 8, 10, 14, 16, 20, 24, 29, 37, 42, 50, 59, 69, 82, 94, 108, 124, 143, 164, 185, 210, 237, 267, 302, 336, 375, 419, 465, 518, 572, 631, 696, 766, 843, 922, 1010, 1103, 1203, 1314, 1426, 1549, 1681,...
[ "nonn" ]
A355183
[ 2, 1, 8, 9, 5, 1, 4, 1, 6, 4, 9, 7, 4, 6, 0, 0, 6, 5, 0, 6, 8, 9, 1, 8, 2, 9, 8, 9, 4, 6, 2, 6, 4, 1, 0, 4, 7, 5, 9, 5, 6, 2, 5, 0, 0, 5, 0, 2, 5, 9, 7, 4, 3, 0, 9, 0, 2, 2, 3, 9, 6, 5, 0, 6...
[ "nonn", "cons" ]
A343701
[ 347, 743, 15581, 42451, 51581, 54421, 58151, 58511, 81551, 112583, 115823, 118253, 121853, 122443, 123581, 125183, 125813, 128153, 128351, 132851, 135281, 138251, 144223, 152183, 152381, 153281, 158231, 181253, 181523, 185123, 211583, 214243, 215183, ...
[ "nonn", "base" ]
A140010
[ 73, 193, 337, 457, 673, 937, 1033, 1297, 1657, 1777, 1993, 2593, 2617, 2713, 2833, 2857, 3313, 3673, 4153, 4177, 4297, 4993, 5233, 5737, 5953, 6217, 6553, 6577, 6673, 6793, 7057, 7537, 7873, 7993, 8377, 9433, 9697, 10177, 10273, 10513, ...
[ "nonn", "easy" ]
A165005
[ 2, 3, 2, 3, 2, 4, 3, 3, 2, 2, 5, 3, 3, 2, 2, 6, 5, 3, 3, 2, 3, 2, 4, 2, 6, 5, 3, 3, 2, 5, 3, 2, 4, 4, 4, 2, 6, 5, 3, 3, 2, 3, 3, 2, 9, 4, 4, 4, 2, 6, 5, 3, 3, 2, 2, 3, 3, 2, 6, 3, 9, 4, 4, 4...
[ "base", "nonn" ]
A272875
[ 6, 7, 3, 8, 8, 1, 3, 3, 1, 1, 0, 7, 8, 7, 5, 5, 1, 5, 7, 8, 0, 2, 3, 1, 1, 9, 0, 4, 6, 8, 1, 0, 1, 9, 3, 3, 8, 7, 6, 4, 5, 0, 3, 3, 4, 7, 9, 3, 3, 7, 2, 5, 4, 5, 4, 8, 9, 9, 8, 1, 3, 5, 1, 6...
[ "nonn", "cons" ]
A022302
[ 1, 2, 7, 10, 21, 66, 213, 246, 273, 454, 673, 700, 727, 934, 2451, 2766, 2799, 3006, 3099, 3396, 234665, 234758, 234977, 235004, 235013, 434216, 436951, 436978, 437005, 437128, 437155, 437708, 437735, 437762, 438017, 438044, 438145, 438314, ...
[ "nonn" ]
A389902
[ 1, 1, 2, 1, 3, 2, 4, 1, 2, 3, 5, 2, 6, 4, 7, 1, 3, 2, 4, 3, 5, 5, 8, 2, 4, 6, 9, 4, 10, 7, 11, 1, 2, 3, 5, 2, 6, 4, 7, 3, 5, 5, 8, 5, 9, 8, 12, 2, 6, 4, 7, 6, 8, 9, 13, 4, 7, 10, 14, 7, 15, 11, ...
[ "nonn", "base" ]
A146316
[ 2, 2, 5, 3, 2, 7, 5, 2, 11, 5, 3, 2, 17, 11, 3, 17, 13, 7, 5, 2, 23, 17, 5, 3, 2, 29, 23, 17, 5, 31, 17, 13, 11, 7, 2, 17, 11, 3, 2, 41, 23, 17, 5, 29, 19, 13, 7, 5, 29, 23, 17, 3, 2, 41, 23, 11, 2, 47,...
[ "easy", "nonn" ]
A300628
[ 1, 2, 2, 6, 5, 5, 16, 16, 16, 16, 52, 51, 51, 51, 51, 172, 170, 170, 172, 170, 170, 586, 585, 585, 585, 585, 585, 585, 2048, 2048, 2048, 2048, 2048, 2048, 2048, 2048, 7286, 7280, 7280, 7285, 7280, 7280, 7285, 7280, 7280, 26216...
[ "nonn", "tabl" ]
A226106
[ 1, 1, 3, 9, 20, 52, 105, 253, 536, 1142, 2421, 4999, 10278, 20686, 41512, 81984, 161029, 312681, 603070, 1153284, 2189331, 4129537, 7733317, 14399693, 26644337, 49034811, 89741600, 163411148, 296074694, 533909026, 958416113, 1712893825, 3048468607, 5...
[ "nonn" ]
A067221
[ 1, 14, 196, 162722, 21592075596, 428134536074377300, 1.326740266296957e+27 ]
[ "nonn", "more" ]
A243393
[ 1, 1, 2, 6, 10, 29, 64, 194, 531, 1733, 5524, 19430, 69322, 262044, 1016740, 4101318, 16996157, 72556640, 317558689, 1424644848, 6536588420, 30647561117, 146647344812, 715511358833, 3556531372395, 17996244725780, 92634418530686, 484756161038264 ]
[ "nonn", "changed" ]
A011240
[ 1, 1, 2, 9, 3, 2, 4, 1, 8, 1, 4, 7, 2, 4, 6, 5, 4, 5, 4, 1, 7, 0, 0, 5, 7, 3, 6, 8, 6, 1, 7, 8, 2, 1, 9, 2, 4, 4, 5, 7, 9, 5, 8, 6, 6, 2, 4, 0, 9, 6, 1, 4, 3, 2, 8, 3, 3, 3, 1, 6, 9, 9, 5, 2...
[ "nonn", "cons" ]
A273954
[ 1, 1, 5, 37, 393, 5481, 95053, 1975821, 47939601, 1330923601, 41629292181, 1448989481589, 55561575788953, 2327512861252281, 105767732851318750, 5182512561142514000, 272391086209524000000, 1.5287595381259195e+22, 9.125255331751909e+23, 5.7726267762799335e+25 ]
[ "nonn" ]
A214635
[ 1, 1, 1, 1, 3, 1, 1, 1, 3, 3, 1, 1, 4, 1, 3, 1, 6, 3, 1, 3, 1, 1, 1, 1, 3, 4, 3, 1, 1, 3, 1, 1, 1, 6, 3, 3, 1, 1, 4, 3, 7, 1, 1, 1, 3, 1, 4, 1, 6, 3, 6, 4, 1, 3, 3, 1, 1, 1, 3, 3, 10, 1, 3, ...
[ "nonn" ]
A193430
[ 23, 6911, 5944066965503999 ]
[ "nonn", "bref", "hard" ]
A267881
[ 1, 0, 3, 6, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41, 43, 45, 47, 49, 51, 53, 55, 57, 59, 61, 63, 65, 67, 69, 71, 73, 75, 77, 79, 81, 83, 85, 87, 89, 91, 93, 95, 97, 99, 101, 103, 105, ...
[ "nonn", "easy" ]
A143527
[ 1, 3, 2, 5, 4, 7, 17, 6, 9, 12, 29, 8, 11, 14, 19, 99, 10, 13, 16, 21, 24, 169, 22, 15, 18, 23, 26, 31, 577, 34, 27, 20, 25, 28, 33, 36, 985, 46, 39, 32, 37, 30, 35, 38, 41, 3363, 58, 51, 44, 49, 42, 47, 40, 43...
[ "nonn", "tabl" ]
A129798
[ 8, 32, 170, 1024, 6553, 43690, 299593, 2097152, 14913080, 107374182, 780903144, 5726623061, 42288908760, 314146179364, 2345624805922, 17592186044416, 132458812569720, 1000799917193443, 7585009898729256 ]
[ "nonn" ]
A338728
[ 1, 1, 2, 5, 15, 53, 217, 1013 ]
[ "nonn", "more" ]
A016026
[ 2, 3, 2, 3, 2, 5, 2, 3, 2, 3, 10, 5, 3, 6, 2, 3, 2, 5, 18, 3, 2, 10, 3, 5, 4, 3, 2, 3, 4, 9, 2, 7, 2, 4, 6, 5, 6, 4, 12, 3, 5, 4, 6, 10, 2, 4, 46, 7, 6, 7, 2, 3, 52, 8, 4, 3, 5, 28, 4, 9, 6, 5, ...
[ "nonn", "base" ]
A044864
[ 64, 72, 74, 75, 76, 77, 78, 79, 82, 91, 100, 109, 118, 127, 128, 137, 144, 145, 147, 148, 149, 150, 151, 155, 164, 173, 182, 191, 192, 201, 210, 216, 217, 218, 220, 221, 222, 223, 228, 237, 246, 255, 256, 265, 274, 283, 288,...
[ "nonn", "base" ]
A241884
[ 1, 2, 5, 7, 9, 10, 11, 13, 15, 16, 17, 19, 21, 22, 23, 25, 26, 27, 28, 29, 31, 33, 34, 35, 36, 37, 39, 40, 41, 43, 45, 46, 47, 49, 50, 51, 52, 53, 55, 57, 58, 59, 61, 63, 64, 65, 66, 67, 69, 70, 71, 73, 75, 76,...
[ "nonn" ]
A022521
[ 1, 31, 211, 781, 2101, 4651, 9031, 15961, 26281, 40951, 61051, 87781, 122461, 166531, 221551, 289201, 371281, 469711, 586531, 723901, 884101, 1069531, 1282711, 1526281, 1803001, 2115751, 2467531, 2861461, 3300781, 3788851, 4329151, 4925281, 5580961, ...
[ "nonn", "easy" ]
A042212
[ 25, 176, 1081, 7743, 388231, 2725360, 16740391, 119908097, 6012145241, 42204924784, 259241693945, 1856896782399, 93104080813895, 653585462479664, 4014616855691879, 28755903452322816, 1441809789471832800 ]
[ "nonn", "cofr", "frac", "easy" ]
A267941
[ 1, 3, 31, 127, 511, 2047, 8191, 32767, 131071, 524287, 2097151, 8388607, 33554431, 134217727, 536870911, 2147483647, 8589934591, 34359738367, 137438953471, 549755813887, 2199023255551, 8796093022207, 35184372088831, 140737488355327, 562949953421311 ]
[ "nonn", "easy" ]
A227270
[ 1, 2, 4, 6, 8, 12, 16, 18, 24, 32, 36, 42, 48, 54, 64, 72, 84, 96, 108, 126, 128, 144, 162, 168, 192, 216, 252, 256, 288, 294, 324, 336, 378, 384, 432, 486, 504, 512, 576, 588, 648, 672, 756, 768, 864, 882, 972, 1008, 10...
[ "nonn", "easy" ]
A325665
[ -2, 1, -2, 4, -8, 16, -31, 56, -91, 126, -126, 1, 449, -1624, 4249, -9499, 18998, -34356, 55453, -75734, 70889, 26334, -379050, 1352079, -3713651, 9000226, -20136807, 42409969, -84819938, 161567266, -292710631, 501416816, -801992971, 1167081366, -1...
[ "easy", "sign" ]
A381716
[ 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 0, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 2, 1, 2, 1, 1, 1, 0, 1, 1, 0, 4...
[ "nonn" ]
A112347
[ 0, 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, 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, ...
[ "sign", "mult" ]
A223047
[ 45, 536, 24120, 570915, 28942155, 932439860, 46018580355, 1721938403990, 83979492229170 ]
[ "nonn" ]
A383409
[ 0, 1, 5, 19, 77, 326, 1406, 5601, 23715, 101092, 431172, 1841357, 7889877, 33924268, 146103678, 628595097, 2695143751, 11495831852, 48733234456, 205252231229, 858955851705, 3573016550756, 14781047390930, 60846099935609, 249385924540907 ]
[ "nonn" ]
A311288
[ 1, 4, 8, 12, 16, 21, 26, 30, 34, 38, 42, 46, 50, 54, 58, 62, 67, 72, 77, 81, 84, 88, 92, 96, 100, 104, 108, 113, 118, 123, 127, 131, 135, 138, 142, 146, 150, 154, 159, 164, 169, 173, 177, 181, 185, 189, 192, 196, 200, ...
[ "nonn" ]
A046105
[ 1, 2, 16, 120, 882, 6468, 47680, 354224, 2652688, 20008864, 151853312, 1158365824, 8873772392, 68219456080, 526025997824, 4066475337152, 31505967787522, 244574907064964, 1901855959279776, 14811829930479600, 115514550050260060, 901993060739459700 ]
[ "nonn" ]
A321188
[ 1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 4, 0, 1, 0, 0, 0, 0, 0, 3, 0, 0, 1, 0, 0, 0, 0, 11, 0, 0, 0, 4, 0, 0, 0, 1 ]
[ "nonn", "more" ]
A152830
[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 2, 1, 1, 2, 1, 1, 2, 1, 1, 3, 3, 1, 1, 3, 3, 1, 1, 3, 3, 1, 1, 3, 3, 1, 1, 4, 6, 4, 1, 1, 4, 6, 4, 1, 1, 4, 6, 4, 1, 1, 4, 6, 4, 1, 1, 5, 10, ...
[ "easy", "nonn", "tabf" ]
A341165
[ 1, 1, 2, 2, 4, 4, 6, 7, 8, 8, 10, 9, 10, 9, 9, 8, 8, 7, 7, 7, 8, 9, 10, 11, 13, 14, 16, 17, 18, 18, 19, 19, 20, 19, 19, 19, 19, 19, 19, 19, 19, 19, 20, 21, 21, 22, 24, 25, 28, 29, 32, 33, 36, 37, 40, 39, ...
[ "nonn", "base" ]
A187576
[ 1, 2, 4, 5, 7, 8, 11, 12, 14, 15, 17, 18, 20, 21, 23, 24, 27, 28, 30, 31, 33, 34, 37, 38, 40, 41, 43, 44, 46, 47, 49, 50, 53, 54, 56, 57, 59, 60, 62, 63, 65, 66, 69, 70, 72, 73, 75, 76, 79, 80, 82, 83, 85, 86, ...
[ "nonn" ]
A145015
[ 1, 3, 1, 3, 3, 5, 3, 1, 1, 3, 1, 7, 7, 1, 3, 5, 3, 13, 7, 1, 3, 1, 1, 3, 3, 1, 1, 3, 1, 7, 3, 1, 1, 3, 1, 7, 1, 15, 15, 1, 7, 1, 3, 5, 7, 1, 3, 5, 3, 13, 7, 1, 3, 5, 3, 13, 3, 29, 15, 1, 7, 1, ...
[ "base", "nonn" ]
A296633
[ 21, 286, 3581, 44783, 565149, 7121315, 89713772, 1130293195, 14240708558, 179419300176, 2260512981540, 28480330069267, 358825298187419, 4520860415119973, 56958579395700730, 717624409759413200 ]
[ "nonn" ]
A096901
[ 1, 0, 1, 1, 0, 1, 1, 1, 2, 4, 3, 9, 14, 13, 52, 124, 161, 181, 715, 2338, 7073, 8624, 15466, 52858, 150365, 316543, 691771, 1681604, 5324919, 15407311, 37417775, 69725286, 155786456, 579599171, 2600274145, 10530031625, 22971756045, 4705777871...
[ "nonn" ]
A265514
[ 0, 1, 2, 3, 0, 11, 11, 11, 0, 11, 22, 22, 0, 11, 22, 33, 0, 101, 101, 101, 0, 111, 111, 111, 0, 121, 121, 121, 0, 131, 131, 131, 0, 101, 202, 202, 0, 111, 212, 212, 0, 121, 222, 222, 0, 131, 232, 232, 0, 101, 202, ...
[ "nonn", "base" ]
A154163
[ 8, 9, 7, 7, 1, 1, 7, 1, 7, 5, 0, 2, 6, 2, 3, 0, 9, 2, 9, 2, 2, 4, 7, 7, 6, 9, 6, 2, 7, 4, 5, 6, 0, 7, 1, 2, 4, 8, 5, 0, 1, 0, 3, 2, 7, 3, 3, 3, 2, 2, 5, 0, 2, 5, 7, 2, 0, 3, 6, 8, 0, 7, 9, 5...
[ "nonn", "cons" ]
A237803
[ 295, 1775, 10433, 65777, 413659, 2653941, 17059551, 110537541, 717782983, 4679120817, 30556330231, 199989593763, 1310729227831, 8603242105963, 56531698121213, 371878534270081, 2448554048752631, 16136308096010384 ]
[ "nonn" ]
A120070
[ 3, 8, 5, 15, 12, 7, 24, 21, 16, 9, 35, 32, 27, 20, 11, 48, 45, 40, 33, 24, 13, 63, 60, 55, 48, 39, 28, 15, 80, 77, 72, 65, 56, 45, 32, 17, 99, 96, 91, 84, 75, 64, 51, 36, 19, 120, 117, 112, 105, 96, 85, 72, 57, ...
[ "nonn", "easy", "tabl" ]
A183244
[ 1, 1, 2, 1, 4, 9, 1, 8, 29, 44, 1, 16, 112, 206, 265, 1, 32, 436, 1168, 1708, 1854, 1, 64, 1708, 6984, 13365, 15702, 14833, 1, 128, 6724, 41808, 114124, 159414, 159737, 133496, 1, 256, 26572, 250464, 998112, 1799688, 2036488, 1780...
[ "nonn", "tabl" ]
A359735
[ 0, 1, -1, 2, 0, 1, 0, 0, 0, 2, 0, 0, 0, -1, 0, 1, 0, 0, 0, -1, 0, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, 0, 0, 0, 0, 0, 0, 0...
[ "sign" ]
A166456
[ 1, 2, 6, 12, 30, 60, 124, 248, 510, 1020, 2044, 4088, 8188, 16376, 32760, 65520, 131070, 262140, 524284, 1048568, 2097148, 4194296, 8388600, 16777200, 33554428, 67108856, 134217720, 268435440, 536870904, 1073741808, 2147483632, 4294967264, 8589934590, ...
[ "nonn" ]
A128606
[ 1, 2, 3, 4, 5, 6, 7, 8, 9, 25, 36, 64, 128, 175, 384, 735, 768, 784, 1296, 1764, 2916, 3675, 5625, 7938, 18432, 28672, 34992, 36864, 39366, 46656, 69984, 82944, 96768, 139968, 165375, 236196, 275625, 297675, 354375, 442368, 497664, 52...
[ "nonn", "base" ]
A184329
[ 28, 637, 19684, 721525, 28249228, 1153470437, 48444564052, 2077059242125, 90467424361132, 3989613357252397, 177719138661832500, 7982551309254262000, 361056936067101700000, 1.6428090590956236e+22, 7.513113430232335e+23, 3.4513364820125635e+25 ]
[ "nonn" ]
A193383
[ -1, -1, 0, 1, 2, 2, 0, -3, -6, -6, 0, 10, 20, 20, 0, -35, -70, -70, 0, 126, 252, 252, 0, -462, -924, -924, 0, 1716, 3432, 3432, 0, -6435, -12870, -12870, 0, 24310, 48620, 48620, 0, -92378, -184756, -184756, 0, 352716, 705432, ...
[ "sign" ]
A098506
[ 1, 2, 3, 8, 9, 22, 19, 100, 101, 266, 435, 860, 1603, 4110, 6529, 4672, 12397, 21558, 7845, 57648, 9447, 50190, 199053, 1880620, 1710309, 7344462, 7529113, 34610408, 555889, 3316906, 21528385, 167087336, 124402817, 73289470, 764401867 ]
[ "easy", "nonn" ]
A162461
[ 1, 48, 1175, 19552, 248723, 2579312, 22706404, 174482000, 1194358970, 7396268880, 41942496051, 219939217728, 1075086490926, 4931595192160, 21350092231441, 87658196804688, 342762976614961, 1281150739056160 ]
[ "nonn" ]
A276901
[ 0, 1, 2, 9, 34, 159, 730, 3579, 17762, 90538, 467796, 2452727, 12997554, 69549847, 375159290, 2038068813, 11140256754, 61227097438, 338140106124, 1875581756078, 10444142352812, 58364192607047, 327203347219250, 1839778650617309, 10372512509521074 ]
[ "nonn", "walk" ]
A103038
[ 0, 1, 3, 4, 10, 22, 40, 54, 81, 84, 106, 193, 597, 681, 1363, 1876, 4024, 14163, 18733, 20842, 23728, 26419, 31450, 44694, 64767 ]
[ "more", "nonn" ]
A176369
[ 0, 16, 4128, 1065008, 274767936, 70889062480, 18289103351904, 4718517775728752, 1217359297034666000, 314073980117168160000, 8.102986951093235e+22, 2.090539225984043e+25 ]
[ "nonn", "easy" ]
A149566
[ 1, 1, 5, 13, 59, 197, 921, 3331, 15865, 60727, 290761, 1154769, 5566691, 22646317, 109734289, 454966047, 2212275089, 9308019727, 45397584033, 193256139843, 944805547085, 4061502079851, 19894633979005, 86223586271699, 423054029104429, 1846333654372483, 907160379511...
[ "nonn", "walk" ]
A333424
[ 3, 7, 11, 31, 47, 211, 223, 229, 281, 293, 2311, 2347, 2383, 2843, 2879, 30091, 30181, 30211, 30307, 30367, 30427, 30493, 30553, 30643, 30829, 30859, 34871, 34961, 35051, 35117, 35267, 35363, 35393, 35423, 510751, 511711, 513067, 513307, 51...
[ "nonn" ]
A017552
[ 256, 1475789056, 208827064576, 4347792138496, 39062500000000, 218340105584896, 899194740203776, 2992179271065856, 8507630225817856, 21435888100000000, 49077072127303940, 103953325454500100 ]
[ "nonn", "easy" ]
A188000
[ 1, 8, 11, 75, 216, 1206, 5443, 30358, 160866, 907542, 5096859, 29196613, 168131646, 978358588, 5726901772, 33757032775, 200087891459, 119249818917, 7141550411892, 42964572899496, 25956521481379, 1574290540818422 ]
[ "nonn" ]
A152152
[ 0, 1, 1, 16, 25, 121, 256, 841, 2025, 5776, 14641, 39601, 102400, 271441, 707281, 1860496, 4862025, 12752041, 33362176, 87403801, 228765625, 599074576, 1568239201, 4106118241, 10749542400, 28143753121, 73680216481, 192900153616 ]
[ "nonn" ]
A179127
[ 123, 174, 214, 231, 286, 362, 383, 445, 487, 510, 527, 546, 566, 571, 608, 627, 669, 706, 718, 734, 741, 762, 805, 914, 942, 965, 970, 1019, 1042, 1059, 1075, 1131, 1155, 1166, 1189, 1203, 1210, 1230, 1236, 1245, 1287, 1320, 1355, ...
[ "nonn" ]
A375842
[ 0, 2, 204, 103320, 182819520, 886613565600, 9973411835945040, 230723130088707980000, 1.0026790739932044e+25, 7.628786709713053e+29, 9.604958030362743e+34, 1.911027912399398e+40 ]
[ "nonn" ]
A085624
[ 2, 4, 5, 8, 8, 10, 11, 14, 14, 16, 17, 20, 20, 22, 23, 26, 26, 28, 29, 32, 32, 34, 35, 38, 38, 40, 41, 44, 44, 46, 47, 50, 50, 52, 53, 56, 56, 58, 59, 62, 62, 64, 65, 68, 68, 70, 71, 74, 74, 76, 77, 80, 80, 82,...
[ "nonn", "easy" ]
A127265
[ 0, 1, 9, 80, 869, 11803, 192281, 3655606, 79443957, 1942559143, 52782218505, 1577702682937, 51448789686149, 1817631642953447, 69156981989768940, 2819300196678697500, 122598478244655040000, 5.664555705302984e+21 ]
[ "nonn" ]
A058547
[ 0, 0, 0, 0, 2, 0, 0, 8, 8, 0, 0, 24, 58, 24, 0, 0, 64, 330, 326, 64, 0, 0, 160, 1706, 3550, 1666, 160, 0, 0, 384, 8362, 35662, 35042, 8102, 384, 0, 0, 896, 39594, 342830, 686498, 331790, 38194, 896, 0, 0, 2048, 182954, 3...
[ "nonn", "tabl", "easy" ]
A092098
[ 1, 6, 19, 30, 61, 78, 127, 150, 217, 246, 331, 366, 469, 510, 625, 678, 817, 870, 1027, 1080, 1261, 1326, 1519, 1566, 1801, 1878, 2107, 2190, 2437, 2520, 2791, 2886, 3169, 3270, 3559, 3678, 3997, 4110, 4447, 4548, 4921, 5034, 5419, ...
[ "nonn" ]
A018214
[ 1, 6, 36, 146, 511, 1512, 4032, 9752, 21942, 46252, 92504, 176484, 323554, 572264, 981024, 1634776, 2656511, 4218786, 6562556, 10016006, 15024009, 22177584, 32258304, 46282704, 65567164, 91792792, 127097712, 174169352 ]
[ "nonn", "easy" ]
A288187
[ 4, 16, 56, 46, 176, 520, 104, 388, 1152, 2584, 214, 822, 2502, 5700, 12368, 380, 1452, 4392, 9944, 21504, 37400, 648, 2516, 7644, 17380, 37572, 65810, 115532, 1028, 3952, 12120, 27572, 59784, 105128, 184442, 294040, 1562, 6060, 18476, 420...
[ "nonn", "tabl" ]
A343330
[ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 945, 0, 0, 2205, 0, 0, 2835, 0, 0, 15435, 0, 0, 8505, 0, 0, 108045, 0, 0, 11025, 25515, 0, 46305, 0, 0, 756315, 0, 0, 81675, 76545, 0, 324135, 0, 0, 5294205, 0, 0, ...
[ "nonn" ]
A311862
[ 1, 4, 8, 13, 17, 21, 26, 31, 35, 40, 42, 47, 51, 54, 59, 63, 69, 74, 78, 84, 88, 90, 96, 97, 100, 107, 109, 115, 121, 125, 132, 135, 138, 145, 145, 148, 154, 155, 163, 168, 170, 179, 182, 185, 193, 193, 196, 203, 203, ...
[ "nonn" ]
A184466
[ 16809, 5002165, 2002023718, 873679701315, 396770571117114, 184478487695574100, 87131390011496960000, 4.161980156680975e+22, 2.0050042433422014e+25, 9.723279387982947e+27 ]
[ "nonn" ]
A015770
[ 1, 2, 3, 6, 249, 498, 118578, 99295058, 297885174, 4005374907 ]
[ "nonn", "more" ]
A357013
[ 1, 2, 1, 12, 4, 2, 120, 30, 12, 6, 1680, 336, 112, 48, 24, 30240, 5040, 1440, 540, 240, 120, 665280, 95040, 23760, 7920, 3168, 1440, 720, 17297280, 2162160, 480480, 144144, 52416, 21840, 10080, 5040, 518918400, 57657600, 11531520, 3144960...
[ "nonn", "tabl" ]
A044024
[ 38, 83, 138, 183, 238, 283, 338, 389, 438, 483, 538, 583, 638, 683, 738, 783, 839, 883, 938, 983, 1038, 1083, 1138, 1183, 1238, 1283, 1338, 1389, 1438, 1483, 1538, 1583, 1638, 1683, 1738, 1783, 1839, 1883, 1938, 1983, 2038 ]
[ "nonn", "base" ]