id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A309691
[ 2, 6, 16, 32, 65, 113, 199, 323, 523, 803, 1237, 1826, 2696, 3873, 5544, 7767, 10859, 14912, 20425, 27598, 37156, 49473, 65679, 86350, 113179, 147191, 190806, 245676, 315415, 402522, 512250, 648551, 818831, 1029139, 1290151, 1610701, 2005969, ...
[ "nonn" ]
A127076
[ 1, 2, 3, 6, 10, 22, 23, 90, 117, 175, 319, 746, 1264, 3925, 8313, 10690, 23566, 64525, 133493, 380783, 903835, 2427039, 6349271, 16657466, 24493816, 74970066, 84860988, 133884920, 144156567, 630996725, 637860615, 2396049996, 3819335725 ]
[ "nonn" ]
A070933
[ 1, 2, 6, 14, 34, 74, 166, 350, 746, 1546, 3206, 6550, 13386, 27114, 54894, 110630, 222794, 447538, 898574, 1801590, 3610930, 7231858, 14480654, 28983246, 58003250, 116054034, 232186518, 464475166, 929116402, 1858449178, 3717247638, 7434950062, 14870628...
[ "nonn" ]
A323541
[ 0, 1, 128, 59049, 51380224, 80869140625, 207351578198016, 811509810302822400, 4.603095542875667e+21, 3.6344623587588604e+25, 3.866445803584e+29, 5.395532942025805e+33, 9.657862121352943e+37 ]
[ "nonn" ]
A013557
[ 1, 2, 10, 2356, 986, 36236852, 45967324, 6310668536, 55999847998, 13505508015664052, 73561146096203970, 1.0182804456121152e+21, 184320514834002200000, 3.099324462918311e+25 ]
[ "nonn", "frac" ]
A186329
[ 2, 4, 6, 8, 10, 12, 14, 17, 19, 21, 23, 25, 27, 30, 32, 34, 36, 38, 40, 42, 45, 47, 49, 51, 53, 55, 58, 60, 62, 64, 66, 68, 70, 73, 75, 77, 79, 81, 83, 86, 88, 90, 92, 94, 96, 98, 101, 103, 105, 107, 109, 111, 11...
[ "nonn" ]
A025084
[ 3, 4, 10, 14, 29, 36, 65, 75, 132, 152, 258, 288, 480, 540, 889, 980, 1604, 1734, 2826, 3080, 5006, 5387, 8740, 9274, 15032, 16055, 26006, 27467, 44473, 47315, 76589, 80838, 130833, 136791, 221369, 232789, 376699, 393071, 636042, 667961, ...
[ "nonn" ]
A126604
[ 4, 3, 11, 131, 17291, 298995971, 89398590973228820, 7.992108067998668e+33, 6.38737913705694e+67 ]
[ "nonn" ]
A224704
[ 1, 1, 1, 2, 4, 7, 13, 24, 45, 84, 156, 291, 543, 1013, 1889, 3524, 6575, 12266, 22883, 42691, 79647, 148593, 277221, 517197, 964911, 1800189, 3358526, 6265846, 11689902, 21809313, 40688632, 75910917, 141623529, 264220545, 492944193, 919663462, ...
[ "nonn" ]
A078991
[ 1, 0, 1, 0, 1, -2, 0, -6, -2, 6, 0, 36, 24, 12, -24, 0, -240, -240, -240, -72, 120, 0, 1800, 2400, 3600, 2160, 600, -720, 0, -15120, -25200, -50400, -45360, -25200, -5760, 5040, 0, 141120, 282240, 705600, 846720, 705600, 322560, 6...
[ "sign", "tabl" ]
A310260
[ 1, 3, 7, 13, 19, 23, 26, 27, 32, 39, 45, 50, 50, 54, 55, 64, 72, 77, 79, 77, 83, 87, 96, 103, 104, 107, 105, 115, 120, 128, 132, 131, 136, 137, 147, 151, 155, 160, 159, 168, 170, 179, 180, 182, 189, 191, 200, 201, 206, ...
[ "nonn" ]
A013195
[ 0, 1, 0, 0, 4, -12, 72, -168, 544, 8144, -91520, 1384768, -11984128, 149032128, -1158162432, 16299168896, -125837340672, 2859883876608, -32260942757888, 1008997773326336, -15535095938220032, 466978134769624060 ]
[ "sign" ]
A206276
[ 309057, 408198, 1528920, 6254364, 33297948, 167821686, 964315869, 4586324364, 22656222912, 107944182948, 562553467470, 2820402520110, 14881797312963, 75177032639256, 401169616195323, 2040321270376866, 10870614344272152 ]
[ "nonn" ]
A013072
[ 0, 2, -1, 17, -54, 685, -4950, 66265, -757400, 11694805, -178921800, 3236694875, -61062375000, 1283939654075, -28563558478000, 688487451426125, -17578710756204000, 478975365932337600, -13780824752845800000 ]
[ "sign" ]
A177597
[ 1, 20, 1338, 209079, 63406701, 33142617807, 27492398898930, 34056987326957588, 60130947572363390000, 1.4582586408753957e+23 ]
[ "nonn" ]
A111493
[ 0, 0, 0, 3, 0, 4, 6, 7, 9, 2, 9, 1, 6, 4, 8, 2, 9, 1, 5, 9, 2, 4, 9, 9, 5, 1, 4, 1, 9, 2, 2, 6, 3, 7, 0, 2, 7, 2, 6, 5, 3, 6, 6, 3, 5, 8, 5, 5, 8, 4, 3, 9, 7, 3, 7, 8, 0, 6, 8, 8, 5, 6, 2, 1...
[ "cons", "nonn" ]
A355627
[ 2, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 50, 14, 0, 2, 9, 0, 2, 2, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, ...
[ "nonn" ]
A154793
[ 1, 4, 2, 4, 8, 2, 8, 7, 4, 8, 4, 3, 2, 0, 8, 8, 7, 0, 6, 0, 5, 6, 7, 0, 8, 3, 1, 2, 0, 0, 5, 1, 6, 2, 1, 1, 7, 1, 9, 1, 0, 2, 8, 6, 5, 1, 0, 9, 1, 2, 5, 4, 8, 0, 0, 1, 5, 8, 3, 0, 5, 8, 3, 1...
[ "nonn", "cons" ]
A343702
[ 157, 220, 227, 246, 253, 260, 267, 279, 283, 286, 305, 316, 323, 342, 344, 361, 368, 377, 379, 384, 403, 410, 435, 440, 442, 468, 475, 487, 494, 501, 523, 530, 531, 549, 562, 568, 586, 592, 594, 595, 599, 602, 621, 625, 640, 6...
[ "nonn", "easy" ]
A298547
[ 0, 1, 1, 1, 4, 1, 2, 17, 17, 2, 3, 61, 109, 61, 3, 5, 216, 588, 588, 216, 5, 8, 793, 3276, 4771, 3276, 793, 8, 13, 2907, 18500, 41762, 41762, 18500, 2907, 13, 21, 10622, 104034, 367315, 575754, 367315, 104034, 10622, 21, 34, ...
[ "nonn", "tabl" ]
A154482
[ 9, 7, 4, 5, 2, 3, 0, 4, 5, 5, 9, 9, 7, 9, 3, 3, 5, 0, 9, 9, 3, 7, 9, 2, 2, 3, 6, 3, 4, 1, 5, 8, 7, 6, 0, 8, 8, 8, 8, 3, 8, 2, 2, 3, 9, 7, 5, 4, 7, 1, 0, 1, 5, 5, 7, 3, 6, 7, 3, 3, 6, 1, 0, 3...
[ "nonn", "cons" ]
A327704
[ 1, 2, 3, 4, 4, 5, 5, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 10, 10, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, ...
[ "nonn" ]
A387410
[ 1, 3, 7, 15, 31, 63, 127, 255, 511, 639, 1023, 2047, 2431, 4095, 5247, 8191, 14335, 16383, 32767, 40959, 44031, 57855, 65535, 90111, 126975, 131071, 204799, 229375, 262143, 376831, 524287, 923647, 1048575, 1632255, 2056191, 2097151, 2621439, ...
[ "nonn" ]
A085372
[ 1, 1, 0, 0, 0, 2, 14, 102, 828, 7522, 75706, 836622, 10073824, 131300266, 1841921270, 27673138086, 443343106468, 7544813993618, 135925854199186, 2584491212811038, 51722014716352136, 1086739983701035400, 23919225571408770000, 550360567615450600000 ]
[ "nonn", "easy" ]
A008680
[ 1, 0, 0, 1, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 4, 4, 4, 5, 5, 6, 6, 6, 7, 8, 8, 8, 9, 10, 10, 11, 11, 12, 13, 13, 14, 15, 15, 16, 17, 18, 18, 19, 20, 21, 22, 22, 23, 25, 25, 26, 27, 28, 29, 30, 31, 32, 33...
[ "nonn", "easy" ]
A346461
[ 2, 8, 16, 32, 128, 256, 512, 2048, 4096, 8192, 32768, 65536, 131072, 524288, 1048576, 2097152, 8388608, 16777216, 33554432, 134217728, 268435456, 536870912, 2147483648, 4294967296, 8589934592, 34359738368, 68719476736, 137438953472, 549755813888, 10995116277...
[ "nonn", "easy" ]
A243713
[ 1, 2, 3, 4, 1, 5, 3, 2, 6, 5, 5, 3, 7, 7, 8, 7, 4, 1, 8, 9, 11, 11, 9, 4, 5, 3, 2, 9, 11, 14, 15, 14, 7, 11, 8, 7, 6, 5, 5, 3, 10, 13, 17, 19, 19, 10, 17, 13, 12, 13, 12, 13, 10, 7, 7, 8, 7, 4, 1, 1...
[ "nonn", "easy", "tabf", "frac" ]
A063607
[ 1, 4, 6, 12, 19, 34, 24, 37, 38, 57, 52, 92, 96, 88, 116, 142, 133, 156, 108, 147, 115, 158, 209, 190, 180, 266, 200, 270, 240, 262, 263, 208, 279, 366, 339, 304, 352, 331, 406, 316, 407, 385, 396, 434, 437, 376, 386, 414,...
[ "base", "nonn" ]
A286759
[ 1, 1, 3, 3, 5, 5, 11, 11, 25, 25, 39, 39, 123, 123, 169, 169, 425, 425, 553, 553, 1897, 1897, 2569, 2569, 6665, 6665, 8713, 8713, 30217, 30217, 41353, 41353, 106889, 106889, 139657, 139657, 483721, 483721, 655753, 655753, 1704329, 170...
[ "nonn", "easy" ]
A190479
[ 4, 1, 3, 6, 3, 3, 4, 4, 4, 4, 3, 2, 3, 3, 3, 5, 2, 3, 4, 4, 2, 2, 3, 3, 4, 3, 3, 5, 3, 3, 6, 1, 1, 5, 2, 3, 4, 2, 3, 3, 3, 1, 3, 1, 1, 2, 5, 2, 4, 2, 3, 0, 3, 3, 3, 1, 1, 6, 4, 1, 2, 1, 3, 6...
[ "nonn", "base" ]
A276457
[ 0, 0, 1, 0, 2, 0, 3, 0, 4, 0, 5, 0, 6, 0, 7, 0, 8, 0, 9, 0, 10, 1, 2, 1, 3, 1, 4, 1, 5, 1, 6, 1, 7, 1, 8, 1, 9, 1, 10, 2, 2, 3, 2, 4, 2, 5, 2, 6, 2, 7, 2, 8, 2, 9, 2, 10, 3, 3, 4, 3, 5, 3, 6, ...
[ "nonn", "base", "look", "hear" ]
A362186
[ 2, 0, 6, 10, 20, 31, 47, 53, 65, 77, 89, 113, 125, 119, 149, 173, 167, 179, 233, 279, 239, 209, 439, 293, 365, 299, 329, 359, 455, 521, 467, 389, 461, 419, 479, 773, 539, 509, 599, 845, 671, 791, 749, 719, 659, 629, 809, 1...
[ "nonn" ]
A027803
[ 35, 350, 1890, 7350, 23100, 62370, 150150, 330330, 675675, 1301300, 2382380, 4176900, 7054320, 11531100, 18314100, 28352940, 42902475, 63596610, 92534750, 132382250, 186486300, 259008750, 355077450, 480957750, 644245875 ]
[ "nonn", "easy" ]
A252358
[ 2, 1093, 1093, 3, 1093, 5, 3, 7, 1093, 3, 5, 11, 3, 13, 7, 3, 1093, 17, 3, 19, 5, 3, 11, 23, 3, 5, 13, 3, 7, 29, 3, 31, 1093, 3, 17, 5, 3, 37, 19, 3, 5, 41, 3, 43, 11, 3, 23, 47, 3, 7, 5, 3, 13, 53, 3, 5, ...
[ "nonn" ]
A165556
[ 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 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, 0...
[ "nonn" ]
A058218
[ 1, 2, 4, 6, 8, 10, 12, 14, 18, 22, 26, 28, 30, 32, 36, 40, 44, 48, 50, 54, 58, 60, 62, 66, 76, 78, 82, 84, 94, 96, 98, 100, 102, 104, 114, 116, 120, 126, 132, 136, 138, 140, 144, 150, 154, 158, 162, 166, 170, 176, 18...
[ "nonn" ]
A016163
[ 1, 14, 151, 1484, 13981, 128954, 1176211, 10664024, 96366841, 869254694, 7833057871, 70546348964, 635161281301, 5717672234834, 51465153629131, 463216900240304, 4169104690053361, 37522705149933380, 337708161046666000 ]
[ "nonn" ]
A185115
[ 1, 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, 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...
[ "nonn", "easy" ]
A317400
[ 11306, 13289, 13693, 16402, 16446, 16491, 16699, 17031, 17113, 17116, 17263, 17576, 18412, 18602, 19825, 20023, 20411, 21022, 21256, 21676, 21936, 22271, 22543, 22716, 22764, 23038, 23233, 23332, 23353, 23580, 23599, 23886, 24036, 24053, 24064, 2...
[ "nonn" ]
A282479
[ 0, 408, 36425, 1905024, 97464193, 4672345728, 213243466320, 9416926688594, 405614428281622, 17116880954509694, 710418850509874600, 29082975400296124000, 1.1767513249018214e+21, 4.713865835316897e+22 ]
[ "nonn" ]
A319444
[ 0, 1, 2, 2, 1, 3, 2, 3, 4, 2, 1, 4, 2, 3, 3, 4, 1, 5, 2, 3, 4, 2, 1, 5, 2, 3, 6, 4, 1, 4, 2, 5, 3, 2, 3, 6, 2, 3, 4, 4, 1, 5, 2, 3, 5, 2, 1, 6, 4, 3, 3, 4, 1, 7, 2, 5, 4, 2, 1, 5, 2, 3, 6, 6...
[ "nonn" ]
A320079
[ 1, 1, 0, 1, 1, 0, 1, 2, 3, 0, 1, 3, 10, 14, 0, 1, 4, 21, 76, 88, 0, 1, 5, 36, 222, 772, 694, 0, 1, 6, 55, 488, 3132, 9808, 6578, 0, 1, 7, 78, 910, 8824, 55242, 149552, 72792, 0, 1, 8, 105, 1524, 20080, 199456, 1169...
[ "nonn", "tabl" ]
A245797
[ 0, 1, 6, 49, 710, 19011, 954184, 90154415, 16108626420, 5481798833245, 3582369649269620, 4532127781040045600, 1.117794907908972e+22, 5.405002925139955e+25, 5.145984634719706e+29, 9.677402372862709e+33 ]
[ "nonn" ]
A277264
[ 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 1, 0, 0, 0, 1, 1, 1, 0, 0, 1, 2, 1, 1, 0, 1, 2, 2, 1, 1, 1, 3, 3, 2, 1, 2, 3, 4, 3, 2, 2, 5, 5, 5, 3, 3, 5, 8, 6, 5, 4, 7, 9, 10, 7, 6, 8, 12, 12, 11, 8, 11...
[ "nonn" ]
A260395
[ 1, 4, 7, 9, 12, 15, 17, 20, 23, 25, 28, 31, 32, 33, 36, 39, 41, 44, 47, 49, 52, 55, 57, 60, 63, 65, 68, 71, 73, 76, 79, 81, 84, 87, 89, 92, 95, 96, 97, 100, 103, 105, 108, 111, 113, 116, 119, 121, 124, 127, 129, 13...
[ "nonn", "easy" ]
A172100
[ 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 1 ]
[ "nonn", "less", "fini", "full" ]
A338716
[ 11, 3, 5, 7, 19, 11, 13, 17, 19, 421, 23, 127, 29, 31, 233, 37, 139, 41, 43, 47, 149, 151, 53, 157, 59, 61, 163, 67, 269, 71, 73, 277, 79, 181, 83, 487, 89, 191, 193, 97, 199, 101, 103, 107, 109, 2111, 113, 1117, 3119, ...
[ "nonn", "base" ]
A132282
[ 2, 3, 29, 127, 24391, 357913, 571789, 1442899, 5177719, 18191449, 30080233, 73560061, 80062993, 118370773, 127263529, 131872231, 318611989, 344472103, 440711083, 461889919, 590589721, 756058033, 865523179, 1095912793 ]
[ "easy", "nonn" ]
A334912
[ 2, 16, 7936, 11184128, 209865342976, 2475749026562048, 123460740095104000000, 5.7797960469524e+24, 3.72940770372053e+30, 4.8549140539252955e+35, 1.938179918860415e+41, 5.692034478248272e+46 ]
[ "nonn", "frac" ]
A048428
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[ "nonn", "base" ]
A261336
[ 0, 0, 0, 1, 3, 10, 30, 88, 255, 742, 2157, 6312, 18563, 54932, 163479, 489264, 1471692, 4447896, 13500689, 41140608, 125818217, 386050543, 1188093392, 3666547089, 11344058829, 35180323336, 109339097119, 340508394528 ]
[ "nonn" ]
A167491
[ 0, 3, 7, 12, 24, 31, 48, 56, 96, 99, 127, 195, 199, 224, 384, 387, 391, 455, 775, 780, 792, 896, 992, 1539, 1548, 1560, 1592, 1799, 2047, 3079, 3096, 3103, 3120, 3128, 3640, 3968, 6144, 6156, 6192, 6200, 6243, 6343, 7175, 7199, ...
[ "nonn" ]
A105063
[ 0, 0, 8, 24, 560, 1616, 36984, 106664, 2440416, 7038240, 161030504, 464417208, 10625572880, 30644497520, 701126779608, 2022072419144, 46263741881280, 133426135166016, 3052705837384904, 8804102848537944, 201432321525522430 ]
[ "nonn", "easy" ]
A032428
[ 1, 99642, 116294673, 47152124264, 11966116940238, 2347836365864484, 393938089395885900, 59752013018382750000, 8.470841585571575e+21, 1.1464569944255418e+24, 1.502219611631147e+26, 1.9239380962379456e+28, 2.4243717620152277e+30 ]
[ "nonn" ]
A335845
[ 1, 1, 1, 1, 1, 2, 2, 1, 1, 3, 5, 3, 3, 5, 3, 1, 1, 4, 9, 9, 4, 6, 16, 11, 11, 16, 6, 4, 9, 9, 4, 1, 1, 5, 14, 19, 14, 5, 10, 35, 40, 19, 26, 61, 40, 26, 35, 10, 10, 35, 26, 40, 61, 26, 19, 40, 35, 10, ...
[ "nonn", "tabf" ]
A178924
[ 0, 1, 2, 5, 6, 23, 16, 89, 106, 267, 364, 1741, 526, 5135, 9360, 17681, 16914, 99347, 71188, 404501, 372758, 892951, 1763352, 7720985, 2809882, 17154075, 34201628, 82821149, 83623966, 435683359, 189300768, 1452343329, 1695678498, 4418961443, 883569...
[ "nonn" ]
A120351
[ 2, 4, 6, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 34, 36, 38, 44, 46, 48, 52, 58, 62, 68, 72, 74, 76, 80, 82, 86, 90, 92, 94, 106, 112, 116, 118, 120, 122, 124, 126, 134, 142, 144, 146, 148, 150, 158, 160, 164, 166, 1...
[ "nonn" ]
A201974
[ 4, 30, 1372, 408599, 858105364, 13486744809160, 1716349328902123800 ]
[ "nonn" ]
A349683
[ 1, 1, 8, 131, 3303, 113137, 4909829, 258275887, 15974450676, 1136164798581, 91366516437475, 8197719659916195, 811910298234609900, 87984131560596050000, 1.0355660409438349e+22, 1.3155501915401923e+24, 1.7941310843327997e+26 ]
[ "nonn" ]
A267690
[ 6, 9, 33, 63, 633 ]
[ "nonn", "base", "fini", "full" ]
A243911
[ 18, 0, 9, 0, 0, 0, 6, 0, 2, 1, 2, 17, 3, 0, 0, 11, 0, 5, 2, 0, 1, 0, 0, 0, 0, 0, 14, 0, 2, 7, 0, 1, 7, 0, 0, 7, 2, 5, 2, 0, 3, 0, 1, 0, 0, 0, 9, 0, 2, 0, 18, 3, 9, 1, 0, 0, 6, 5, 2, 0, 2, 0, 3...
[ "nonn", "base" ]
A032862
[ 0, 1, 2, 3, 4, 5, 6, 7, 14, 15, 21, 22, 23, 28, 29, 30, 31, 35, 36, 37, 38, 39, 42, 43, 44, 45, 46, 47, 50, 51, 52, 53, 54, 55, 99, 100, 101, 102, 103, 104, 107, 108, 109, 110, 111, 148, 149, 150, 151, 152, 153, 15...
[ "nonn", "base" ]
A100085
[ 1, 2, 5, 0, 0, 2, 1, 4, 3, 3, 4, 7, 0, 5, 0, 7, 5, 4, 4, 5, 8, 1, 6, 1, 8, 6, 5, 5, 6, 9, 2, 7, 3, 0, 5, 1, 6, 5, 7, 7, 5, 3, 4, 7, 0, 6, 2, 1, 8, 8, 6, 5, 7, 6, 8, 3, 0, 7, 4, 2, 9, 2, 0, 3...
[ "cons", "nonn" ]
A183940
[ 1, 1, 11, 39, 497, 2343, 22881, 177535, 1682939, 14821961, 149400849, 1447662427, 14866001809, 149548074379, 1531694916059, 15535552043969, 159929685546853, 1644687110377919, 17107437074253384, 178041145616880960 ]
[ "nonn" ]
A244941
[ 4, 9, 14, 23, 34, 43, 58, 75, 94, 109, 132, 157, 176, 205, 236, 269, 294, 331, 370, 399, 442, 487, 520, 569, 620, 673, 712, 769, 828, 871, 934, 999, 1066, 1115, 1186, 1259, 1312, 1389, 1468, 1525, 1608, 1693, 1780, 1843, 1934, ...
[ "nonn" ]
A133584
[ 1009, 55001, 64301, 64553 ]
[ "more", "nonn" ]
A142657
[ 151, 263, 431, 487, 599, 823, 991, 1103, 1327, 1439, 1607, 1663, 1831, 1999, 2111, 2447, 2503, 2671, 3119, 3343, 3511, 3623, 3847, 4127, 4463, 4519, 4799, 4967, 5023, 5303, 5471, 5527, 5639, 5807, 6143, 6199, 6311, 6367, 6703, 6871, 698...
[ "nonn", "easy" ]
A150368
[ 1, 2, 7, 23, 94, 357, 1519, 6195, 26950, 114187, 504639, 2190082, 9791313, 43205127, 194850625, 870315396, 3951836163, 17815087768, 81338785555, 369345445042, 1694024296573, 7737230531213, 35623621507846, 163487185465527, 755195334127306, 3479713518316390, 1611945...
[ "nonn", "walk" ]
A278159
[ 1, 2, 2, 6, 2, 4, 6, 30, 2, 4, 4, 12, 6, 12, 30, 210, 2, 4, 4, 12, 4, 8, 12, 60, 6, 12, 12, 36, 30, 60, 210, 2310, 2, 4, 4, 12, 4, 8, 12, 60, 4, 8, 8, 24, 12, 24, 60, 420, 6, 12, 12, 36, 12, 24, 36, 180, ...
[ "nonn", "base" ]
A303361
[ 1, 2, 10, 60, 262, 1372, 7044, 32760, 153670, 789676, 3659820, 17109320, 83073180, 381273240, 1786996424, 8604391920, 38832248902, 179714213580, 845485079580, 3834271942440, 17666638985652, 81920437065288, 370224975781560, 1685489994025360 ]
[ "nonn" ]
A382097
[ 17, 31, 71, 127, 287, 391, 647, 799, 1151, 1799, 2047, 2887, 3527, 3871, 4607, 5831, 7199, 7687, 9247, 10367, 10951, 12799, 14111, 16199, 19207, 20807, 21631, 23327, 24199, 25991, 32767, 34847, 38087, 39199, 44999, 46207, 49927, 53791, 5644...
[ "nonn", "easy" ]
A093695
[ 0, 0, 2, 4, 10, 18, 34, 56, 94, 146, 228, 340, 506, 730, 1050, 1476, 2066, 2844, 3896, 5268, 7090, 9442, 12518, 16454, 21534, 27980, 36210, 46572, 59674, 76056, 96594, 122106, 153852, 193048, 241492, 300974, 374038, 463286, 572304, 704826...
[ "nonn" ]
A376216
[ 9, 18, 25, 36, 45, 49, 50, 63, 72, 75, 81, 90, 98, 99, 100, 117, 121, 126, 144, 147, 150, 153, 162, 169, 171, 175, 180, 196, 198, 200, 207, 225, 234, 242, 245, 252, 261, 275, 279, 288, 289, 294, 300, 306, 315, 324, 325, 33...
[ "nonn", "easy" ]
A144371
[ 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 3, 2, 4, 2, 4, 5, 6, 6, 8, 8, 6, 10, 13, 12, 18, 16, 22, 14, 26, 26, 32, 37, 40, 48, 34, 52, 66, 64, 86, 86, 108, 70, 125, 132, 144, 180, 194, 216, 158, 250, 290, 300, 386, 388, ...
[ "eigen", "nonn" ]
A317293
[ 1, 4, 7, 11, 16, 20, 28, 32, 39, 46, 54, 58, 72, 76, 84, 96, 107, 111, 126, 130, 144, 156, 164, 168, 190, 199, 207, 219, 235, 239 ]
[ "nonn", "more" ]
A282265
[ 1, 0, 111, 0, 11111, 0, 1111111, 0, 111111111, 0, 11111111111, 0, 1111111111111, 0, 111111110011111, 0, 11111111000000112, 11110000, 1111111100110011000, 11110000, 111111110000000000000, 111111111000, 1.11111111111e+22, 111111110000 ]
[ "nonn", "easy" ]
A076610
[ 1, 3, 5, 9, 11, 15, 17, 25, 27, 31, 33, 41, 45, 51, 55, 59, 67, 75, 81, 83, 85, 93, 99, 109, 121, 123, 125, 127, 135, 153, 155, 157, 165, 177, 179, 187, 191, 201, 205, 211, 225, 241, 243, 249, 255, 275, 277, 279, 283, ...
[ "nonn" ]
A102495
[ 15, 20, 24, 30, 35, 40, 42, 45, 48, 55, 56, 60, 63, 65, 66, 70, 72, 75, 77, 78, 80, 84, 85, 88, 90, 91, 96, 99, 100, 104, 105, 110, 112, 117, 119, 120, 126, 130, 132, 135, 136, 140, 143, 144, 150, 152, 153, 154, 156, 1...
[ "nonn" ]
A215126
[ 1, 1, 3, 13, 103, 1071, 16261, 310543, 7712433, 234935473, 8704118611, 385999169421, 20105403167983, 1220933294124943, 85391317006742130, 6817483491016756000, 617003393602674200000, 6.2822626252518815e+22, 7.1533545745142e+24, 9.059899840316879e+26 ]
[ "nonn" ]
A128345
[ 2, 19, 1021, 5077, 34031, 46099, 65707, 347437 ]
[ "hard", "more", "nonn" ]
A221986
[ 0, 3, 9, 46, 479, 3711, 30830 ]
[ "nonn", "base" ]
A061041
[ 0, 9, 5, 33, 3, 65, 21, 105, 1, 153, 45, 209, 15, 273, 77, 345, 3, 425, 117, 513, 35, 609, 165, 713, 3, 825, 221, 945, 63, 1073, 285, 1209, 5, 1353, 357, 1505, 99, 1665, 437, 1833, 15, 2009, 525, 2193, 143, 2385, 621, 2585...
[ "nonn", "frac", "nice", "easy" ]
A190089
[ 1, 4, 21, 114, 616, 3329, 17991, 97229, 525456, 2839729, 15346786, 82938844, 448227521, 2422362079, 13091204281, 70748973084, 382349636061, 2066337330754, 11167134898976, 60350698792449, 326154101090951, 1762639037938629, 9525854090667496, 51480702630305690, 278217860...
[ "nonn", "easy" ]
A231513
[ 21, 225, 7505, 158061, 3691558, 97188562, 2438335793, 59978232085, 1495872774439, 37400468849958, 931855284393627, 23216141094837970, 578870789698009300, 14432095381737048000, 359752524394488100000 ]
[ "nonn" ]
A032097
[ 2, 2, 5, 14, 39, 107, 289, 772, 2047, 5402, 14213, 37325, 97905, 256622, 672337, 1760998, 4611643, 12075527, 31617521, 82781216, 216732891, 567428402, 1485570025, 3889310329, 10182407329, 26657986682, 69791674109, 182717232062, 478360339887 ]
[ "nonn", "easy" ]
A125773
[ 35, 297, 1093, 2186, 2590, 3279, 3511, 4372, 5465, 6558, 7022, 7651, 8744, 9837, 10533, 10930, 13116, 14044, 14209, 21066, 23175, 24012, 24577, 26592, 28088, 31599, 35110, 38621, 42132, 49154, 987704, 3020871, 3074592, 18368834, 22655923, 1057138...
[ "nonn" ]
A092117
[ 10, 43, 51, 55, 58, 60, 136, 171, 204, 213, 214, 222, 270, 288, 309, 334, 339, 364, 366, 376, 414, 423, 460, 477, 492, 501, 502, 507, 513, 519, 565, 585, 586, 597, 621, 649, 726, 729, 787, 852, 861, 870, 903, 906, 915, 933, ...
[ "nonn", "base" ]
A357941
[ 1, 0, 0, 0, 0, 1, 0, 0, 0, 1, 1, 0, 0, 1, 3, 1, 0, 1, 7, 6, 1, 1, 15, 25, 10, 2, 31, 90, 65, 16, 64, 301, 350, 141, 148, 967, 1701, 1051, 521, 3053, 7771, 6952, 3157, 9792, 34141, 42527, 23850, 34381, 146500, 246776, ...
[ "nonn" ]
A341880
[ 1, 0, 0, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 0, 0, 0, 4, 0, 0, 0, 6, 0, 0, 0, 4, 0, 0, 0, 0, 0, 0, 0, 16, 0, 0, 0, 0, 0, 4, 0, 4, 0, 0, 0, 12, 0, 0, 0, 10, 0, 0, 0, 0, 0, 0, 0, 28, 0, 0, 0, 0, 0, 0,...
[ "nonn" ]
A069539
[ 4, 40, 112, 220, 400, 1012, 1120, 1300, 2020, 2200, 3100, 4000, 10012, 10120, 10300 ]
[ "dead" ]
A208876
[ 51, 28246, 16205218, 9130195864, 5134914951163, 2887736845657700, 1624001903270517500, 913306247364608400000, 5.13625349165806e+23, 2.8885273483544336e+26, 1.6244506384396844e+29 ]
[ "nonn" ]
A210648
[ 1, 1, 1, 1, 3, 32, 2, 3, 3, 1, 3, 2, 3, 6, 1, 3, 1, 3, 6, 8, 1, 4, 17, 1, 2, 3, 3, 1, 2, 2, 3, 5, 15, 1, 1, 5, 1, 1, 3, 2, 1, 1, 1, 3, 1, 2, 2, 2, 1, 1, 1, 25, 1, 8, 10, 1, 1, 11, 2, 2, 25, 2, ...
[ "nonn", "cofr" ]
A352070
[ 1, 1, 1, 10, 10, 604, -1844, 107344, -1201400, 42193576, -875584376, 29853569008, -880141783184, 32865860907424, -1216481572723616, 51296026356128510, -2244334822166729700, 106984479644794780000, -5.358207684820194e+21, 2.8646641324662258e+23 ]
[ "sign" ]
A383882
[ 1, 10, 750, 106470, 22350954, 6220194750, 2157580085700, 896587036640680, 434225240080346900, 240175986308550360000, 1.4937794904263755e+23, 1.0319247187450802e+26, 7.839485084108373e+28, 6.495721330803651e+31, 5.829885168096905e+34 ]
[ "nonn" ]
A179965
[ 5040, 47622, 521606, 6231544, 76972416, 957913824, 11902581120 ]
[ "nonn", "more" ]
A369735
[ 0, 1, 1, 1, 1, 1, 3, 4, 6, 15, 28, 56, 125, 287, 646, 1540, 3625, 8484, 21167, 51458, 126342, 323126, 811538, 2052501, 5339265, 13751212, 35589866, 94032931, 246791641, 650227636, 1739032299, 4630165425, 12373805281, 33429284691, 90073865814, 243...
[ "nonn" ]
A005238
[ 33, 85, 93, 141, 201, 213, 217, 230, 242, 243, 301, 374, 393, 445, 603, 633, 663, 697, 902, 921, 1041, 1105, 1137, 1261, 1274, 1309, 1334, 1345, 1401, 1641, 1761, 1832, 1837, 1885, 1893, 1924, 1941, 1981, 2013, 2054, 2101, 2133, 218...
[ "nonn", "easy", "nice" ]
A004906
[ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 1024, 1025, 1026, 1027, 1028, 1029, 1030, 1031, 1032, 1033, 1034, 2048, 2049, 2050, 2051, 2052, 2053, 2054, 2055, 2056, 2057, 3072, 3073, 3074, 3075, 3076, 3077, 3078 ]
[ "nonn" ]
A081219
[ 1, 34, 259, 1092, 3333, 8294, 17927, 34952, 62985, 106666, 171787, 265420, 396045, 573678, 809999, 1118480, 1514513, 2015538, 2641171, 3413332, 4356373, 5497206, 6865431, 8493464, 10416665, 12673466, 15305499, 18357724, 21878557, 25919998 ]
[ "easy", "nonn" ]
A058329
[ 1, 2, 4, 8, 13, 17, 52, 59, 71, 85, 104, 112, 148, 156, 192, 224, 264, 280, 284, 290, 322, 336, 356, 364, 372, 420, 434, 438, 442, 450, 460, 465, 503, 504, 516, 521, 523, 558, 570, 572, 578, 580, 598, 612, 624, 636, 656, 6...
[ "nonn" ]