id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A053126
[ 5, 35, 126, 330, 715, 1365, 2380, 3876, 5985, 8855, 12650, 17550, 23751, 31465, 40920, 52360, 66045, 82251, 101270, 123410, 148995, 178365, 211876, 249900, 292825, 341055, 395010, 455126, 521855, 595665, 677040, 766480 ]
[ "nonn", "easy" ]
A340640
[ 4, 9, 25, 27, 32, 36, 49, 64, 81, 100, 121, 125, 128, 144, 196, 225, 243, 256, 289, 324, 361, 484, 529, 576, 676, 784, 961, 1000, 1024, 1089, 1225, 1296, 1331, 1369, 1681, 1764, 2025, 2116, 2187, 2197, 2209, 2304, 2500, 2704, 28...
[ "nonn" ]
A079443
[ 1, 1, 2, 2, 2, 5, 20, 24, 48, 49, 196, 224, 712, 3384, 3840, 9828, 39312, 90192, 218784 ]
[ "nonn", "more" ]
A307573
[ 0, 0, 1, 3, 7, 15, 32, 70, 161, 393, 1012, 2706, 7392, 20384, 56359, 155801, 430497, 1190017, 3295100, 9149602, 25495910, 71318078, 200242825, 564166011, 1594291230, 4517054710, 12826583811, 36493143333, 104008257711, 296906934031, 848843276928, 24302934...
[ "nonn" ]
A169456
[ 1, 11, 110, 1100, 11000, 110000, 1100000, 11000000, 110000000, 1100000000, 11000000000, 110000000000, 1100000000000, 11000000000000, 110000000000000, 1100000000000000, 11000000000000000, 110000000000000000 ]
[ "nonn" ]
A184281
[ 24, 855, 44368, 2691711, 174342216, 11767964475, 817028472960, 57906884939751, 4169295435709000, 303941636737938600, 22381156868522560000, 1.6618008974524977e+21, 1.2425157479286952e+23, 9.345493446918378e+24, 7.065193045869401e+26 ]
[ "nonn" ]
A301367
[ 1, 1, 1, 1, 0, 1, 1, 1, 1, 2, 1, 0, 0, 0, 1, 1, 1, 1, 2, 1, 3, 1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 3, 4, 4, 3, 5, 1, 0, 1, 0, 1, 0, 1, 0, 2, 1, 1, 0, 0, 1, 2, 1, 1, 1, 3, 1, 0, 0, 0, 0, 0, 0, 0, 0...
[ "nonn", "tabl" ]
A104175
[ 8, 6, 7, 5, 3, 0, 9, 8, 6, 7, 5, 3, 0, 9, 8, 6, 7, 5, 3, 0, 9, 8, 6, 7, 5, 3, 0, 9, 8, 6, 7, 5, 3, 0, 9, 8, 6, 7, 5, 3, 0, 9, 8, 6, 7, 5, 3, 0, 9, 8, 6, 7, 5, 3, 0, 9, 8, 6, 7, 5, 3, 0, 9, 8...
[ "nonn", "dumb" ]
A229964
[ 0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 0, 3, 0, 3, 2, 1, 0, 4, 0, 5, 1, 3, 0, 8, 0, 4, 3, 4, 0, 10, 0, 7, 3, 5, 2, 9, 0, 6, 4, 9, 0, 13, 0, 12, 6, 6, 0, 16, 0, 9, 6, 9, 0, 14, 1, 12, 3, 8, 0, 25, 0, 12, ...
[ "nonn" ]
A303942
[ 1, 1, 0, 0, 1, 1, 0, 0, 1, 2, 1, 0, 0, 1, 1, 0, 1, 2, 2, 1, 1, 1, 1, 1, 1, 3, 3, 2, 1, 2, 2, 1, 2, 3, 4, 3, 3, 2, 2, 2, 2, 4, 4, 4, 3, 4, 3, 2, 3, 5, 7, 5, 5, 5, 6, 4, 3, 6, 8, 8, 5, 6, 6, 6...
[ "nonn", "look" ]
A075637
[ 1, 4, 6, 10, 16, 24, 33, 40, 52, 63, 76, 90, 105, 121, 138, 155, 175, 198, 218, 243, 267, 292, 319, 344, 374, 404, 435, 469, 501, 534, 568, 606, 645, 685, 723, 765, 805, 849, 895, 939, 986, 1035, 1083, 1135, 1184, 1238, 1290...
[ "nonn" ]
A211296
[ 1, 3, 9, 25, 69, 190, 525, 1457, 4063, 11384, 32042, 90575, 257063, 732301, 2093325, 6002925, 17264587, 49786402, 143922204, 416980589, 1210571810, 3521070621, 10258832781, 29936167744, 87480549441, 255971381746, 749874535899, 2199178125095, 6456071960467, 1...
[ "nonn" ]
A147902
[ 1, 2, 6, 16, 74, 304, 1424, 6554, 36720, 207648, 1262922, 7739400, 57383696, 429424444, 3331954076, 26331934036 ]
[ "nonn" ]
A059658
[ 27, 46, 46, 12, 46, 73, 31, 15, 12, 46, 46, 58, 15, 46, 12, 46, 58, 46, 27, 46, 46, 12, 46, 27, 46, 46, 58, 46, 27, 31, 15, 46, 12, 46, 58, 61, 12, 46, 46, 58, 27, 34, 12, 46, 58, 27, 46, 31, 15, 46, 12, 46, 73, ...
[ "nonn" ]
A257971
[ 0, 2, -1, 5, -2, 8, -5, 21, -8, 34, -21, 81, -34, 128, -81, 337, -128, 546, -337, 1301, -546, 2056, -1301, 5381, -2056, 8706, -5381, 20737, -8706, 32768, -20737, 86273, -32768, 139778, -86273, 333061, -139778, 526344, -333061, 1377557, ...
[ "sign" ]
A344809
[ 54, 57, 60, 62, 63, 65, 66, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112,...
[ "nonn" ]
A248523
[ 5, 137, 1787, 1997, 2237, 2657, 3527, 4127, 4337, 4787, 8087, 12107, 13757, 14447, 17987, 19697, 21377, 23057, 23687, 31247, 32297, 34157, 34367, 35447, 37547, 38567, 39227, 43397, 48677, 51197, 51827, 53087, 58907, 65027, 65837 ]
[ "nonn" ]
A312856
[ 1, 4, 9, 12, 16, 20, 25, 29, 37, 40, 46, 49, 52, 56, 59, 65, 69, 76, 79, 85, 87, 93, 96, 101, 108, 108, 116, 117, 120, 127, 132, 136, 145, 147, 150, 155, 153, 162, 165, 171, 180, 182, 187, 190, 190, 198, 201, 205, 216, ...
[ "nonn" ]
A031134
[ 5, 7, 11, 29, 59, 97, 127, 223, 1151, 1361, 2203, 2521, 5639, 9601, 14143, 19661, 19681, 31469, 31477, 38543, 58889, 156007, 360769, 370373, 396871, 1357333, 1562051, 4652507, 8917663, 20831533, 38089453, 70396589, 72546391, 102765847 ]
[ "nonn" ]
A347364
[ 19, 89, 28729, 130681, 1875529, 3420649, 7893289, 112561489, 373320361, 777824209, 1506177289, 3262865761, 4362536449, 5887416169, 8882968249, 9355048561, 18141261409, 21517809409, 22898196361, 27983100241, 35152312609, 62001747001, 67123223641, 85662460441, 895263248...
[ "nonn" ]
A354971
[ 1, 0, 1, 1, 3, 1, 1, 5, 5, 5, 1, 3, 3, 3, 6, 3, 5, 5, 5, 5, 1, 7, 1, 1, 9, 5, 9, 8, 8, 9, 9, 1, 4, 2, 10, 4, 10, 4, 1, 3, 2, 11, 4, 11, 4, 2, 2, 5, 5, 2, 10, 5, 5, 12, 2, 12, 2, 7, 3, 2, 2, 7, ...
[ "nonn", "easy" ]
A248558
[ 4, 49, 1, 64, 4, 64, 1, 64, 4, 64, 16, 25, 81, 0, 16, 25, 4, 9, 25, 9, 36, 0, 4, 64, 49, 16, 49, 1, 9, 25, 4, 36, 36, 4, 16, 81, 49, 49, 25, 49, 4, 16, 49, 0, 81, 9, 36, 81, 81, 81, 25, 81, 25, 49, 16, 81, ...
[ "nonn", "easy", "base" ]
A138260
[ 1, 2, 2, 2, 4, 2, 1, 2, 13, 4, 20, 2, 12, 11, 4, 11, 16, 13, 3, 4, 11, 20, 67, 2, 4, 12, 19, 11, 43, 4, 60, 13, 20, 16, 13, 13, 9, 3, 12, 4, 10, 11, 6, 20, 13, 67, 66, 11, 7, 4, 16, 12, 79, 19, 20, 11, 3,...
[ "nonn" ]
A263737
[ 3, 7, 11, 12, 15, 19, 21, 23, 24, 27, 28, 31, 33, 35, 39, 43, 44, 47, 48, 51, 55, 56, 57, 59, 60, 63, 67, 69, 71, 75, 76, 77, 79, 83, 84, 87, 88, 91, 92, 93, 95, 96, 99, 103, 105, 107, 108, 111, 112, 115, 119, 120,...
[ "nonn" ]
A005175
[ 0, 0, 3, 131, 1830, 16990, 127953, 851361, 5231460, 30459980, 170761503, 931484191, 4979773890, 26223530970, 136522672653, 704553794621, 3611494269120, 18415268221960, 93516225653403, 473366777478651, 2390054857197150, 12043393363764950, 60590148885015750 ]
[ "nonn", "easy" ]
A360545
[ 0, 1, 6, 54, 756, 14580, 358668, 10736712, 378823392, 15395255280, 708217959600, 36380741745744, 2064234271203360, 128214974795177090, 8652900673357097000, 630483717450225500000, 4.9330027417316555e+22, 4.1249923619281785e+24 ]
[ "nonn" ]
A357826
[ 231213, 312132, 12132003, 23121300, 23421314, 30023121, 31213200, 41312432, 1214230043, 1312432004, 2342131400, 2412134003, 3004312142, 3400324121, 4002342131, 4131243200, 4562342536, 4635243265, 5364235246, 5623425364, 6352432654, 6425324635, 14156742352637, 1416734523...
[ "nonn", "base", "easy", "fini", "full" ]
A290287
[ 8, 16, 32, 16, 24, 48, 64, 16, 84, 12, 32, 36, 64, 64, 52, 128, 56, 48, 128, 96, 68, 144, 256, 136, 252, 184, 108, 256, 208, 324, 512, 224, 232, 400, 192, 512, 384, 272, 232, 576, 148, 256, 36, 616, 208, 168, 344, 736, 4...
[ "nonn" ]
A034130
[ 3, 14, 40, 86, 158, 263, 406, 593, 831, 1125, 1482, 1907, 2407, 2986, 3653, 4411, 5269, 6230, 7302, 8490, 9801, 11240, 12813, 14527, 16388, 18400, 20571, 22907, 25413, 28095, 30960, 34013, 37260, 40708, 44362, 48229, 52314, 56624, 61163 ]
[ "nonn", "base" ]
A354206
[ 1, 1, 1, 23, 3, 1, 1, 5, 11, 3, 2, 23, 1, 1, 3, 469, 2, 11, 1, 69, 1, 2, 1, 5, 53, 1, 4, 23, 11, 3, 7, 69, 2, 2, 3, 253, 3, 1, 1, 15, 1, 1, 1, 46, 33, 1, 2, 469, 33, 53, 2, 23, 23, 4, 6, 5, 1, 11, 13,...
[ "nonn", "mult" ]
A165106
[ 0, 17892, 1589, 21483, 1022, 7034104602, 1445787 ]
[ "base", "nonn" ]
A011111
[ 1, 9, 1, 8, 6, 4, 5, 1, 9, 1, 6, 2, 5, 3, 0, 6, 2, 4, 7, 8, 6, 4, 2, 7, 8, 5, 6, 7, 1, 8, 5, 7, 3, 3, 0, 8, 8, 4, 2, 1, 5, 0, 6, 5, 2, 8, 6, 9, 4, 2, 8, 9, 2, 8, 2, 0, 2, 4, 2, 0, 8, 2, 2, 9...
[ "nonn", "cons", "easy" ]
A010138
[ 7, 4, 1, 2, 1, 4, 14, 4, 1, 2, 1, 4, 14, 4, 1, 2, 1, 4, 14, 4, 1, 2, 1, 4, 14, 4, 1, 2, 1, 4, 14, 4, 1, 2, 1, 4, 14, 4, 1, 2, 1, 4, 14, 4, 1, 2, 1, 4, 14, 4, 1, 2, 1, 4, 14, 4, 1, 2, 1, 4, 14, 4...
[ "nonn", "cofr" ]
A361195
[ 1, 3, 135, 23625, 260465625, 11371668721875, 7888446990683635000, 2.17769650891861e+25, 1.533004320231929e+34, 4.303352343655628e+43, 1.927983533652931e+54 ]
[ "nonn", "frac" ]
A356841
[ 0, 1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 13, 14, 15, 16, 18, 20, 21, 22, 23, 26, 27, 29, 30, 31, 32, 36, 37, 38, 41, 42, 43, 44, 45, 46, 47, 50, 52, 53, 54, 55, 58, 59, 61, 62, 63, 64, 68, 72, 74, 75, 77, 78, 82, 8...
[ "nonn" ]
A315533
[ 1, 6, 11, 17, 22, 30, 34, 41, 45, 52, 58, 64, 69, 74, 82, 86, 94, 97, 104, 110, 116, 121, 126, 134, 138, 146, 149, 156, 162, 168, 173, 178, 186, 190, 198, 201, 208, 214, 220, 225, 230, 238, 242, 250, 253, 260, 266, 272, ...
[ "nonn" ]
A286521
[ 1, 3, 5, 15, 31, 63, 127, 255, 511, 1023, 2047, 4095, 8191, 16383, 32767, 65535, 131071, 262143, 524287, 1048575, 2097151, 4194303, 8388607, 16777215, 33554431, 67108863, 134217727, 268435455, 536870911, 1073741823, 2147483647, 4294967295, 8589934591 ]
[ "nonn", "easy" ]
A240615
[ 1, 1, 2, 5, 14, 46, 165, 651, 2771, 12638, 61397, 315507, 1708420, 9693168, 57360909, 352099643, 2229930365, 14494768448, 96229497555, 649761232948, 4446218110646, 30745322129155, 214353097904732, 1504152530715607, 10609439744527674, 75146372454242530 ]
[ "nonn" ]
A366077
[ 0, 1, 1, 2, 1, 2, 1, 0, 2, 2, 1, 3, 1, 2, 2, 0, 1, 3, 1, 3, 2, 2, 1, 1, 2, 2, 0, 3, 1, 3, 1, 0, 2, 2, 2, 4, 1, 2, 2, 1, 1, 3, 1, 3, 3, 2, 1, 1, 2, 3, 2, 3, 1, 1, 2, 1, 2, 2, 1, 4, 1, 2, 3, 0...
[ "nonn", "easy" ]
A168860
[ 1, 39, 1482, 56316, 2140008, 81320304, 3090171552, 117426518976, 4462207721088, 169563893401344, 6443427949251072, 244850262071540740, 9304309958718548000, 353563778431304800000, 1.3435423580389584e+22 ]
[ "nonn" ]
A080281
[ 1, 2, 4, 8, 17, 19, 23, 35, 221, 424, 3846, 16708, 19142, 19937, 55188, 87368 ]
[ "more", "nonn" ]
A022964
[ 8, 7, 6, 5, 4, 3, 2, 1, 0, -1, -2, -3, -4, -5, -6, -7, -8, -9, -10, -11, -12, -13, -14, -15, -16, -17, -18, -19, -20, -21, -22, -23, -24, -25, -26, -27, -28, -29, -30, -31, -32, -33, -34, -35, -36, -37, -38, -39, -40, ...
[ "sign", "easy" ]
A332744
[ 0, 0, 0, 0, 1, 2, 4, 7, 12, 17, 28, 39, 55, 77, 107, 142, 194, 254, 332, 434, 563, 716, 919, 1162, 1464, 1841, 2305, 2857, 3555, 4383, 5394, 6617, 8099, 9859, 12006, 14551, 17600, 21236, 25574, 30688, 36809, 44007, 52527, 62574, ...
[ "nonn" ]
A250421
[ 20, 125, 476, 1351, 3154, 6433, 11906, 20461, 33178, 51359, 76520, 110417, 155080, 212797, 286144, 378023, 491638, 630529, 798614, 1000157, 1239806, 1522639, 1854124, 2240161, 2687132, 3201853, 3791620, 4464263, 5228090, 6091937, 7065226 ]
[ "nonn" ]
A095180
[ 2, 3, 5, 7, 11, 31, 71, 13, 73, 17, 37, 97, 79, 101, 701, 311, 131, 941, 151, 751, 761, 971, 181, 191, 991, 113, 313, 733, 743, 353, 953, 373, 383, 983, 107, 907, 727, 337, 937, 347, 157, 757, 167, 967, 787, 797, 709, 919,...
[ "base", "easy", "nonn" ]
A096327
[ 7, 23, 97, 227, 661, 1009, 1879, 2437, 3803, 6481, 7573, 11321, 14327, 15877, 19471, 25469, 32429, 34849, 42943, 49037, 52121, 62081, 69401, 80929, 97879, 107053, 111863, 121631, 126719, 137143, 177589, 189913, 209569, 216481, 251969, 259547 ]
[ "nonn" ]
A257650
[ 1024, 4096, 5776, 240100, 540225, 960400, 1500625, 2160900, 26357956, 688012900, 843612025, 1548029025, 2296038889, 2353026064, 2679097600, 2752051600, 3374448100, 4300080625 ]
[ "nonn", "base" ]
A221280
[ 2, 7, 9, 11, 12, 14, 15, 17, 18, 19, 21, 24, 25, 27, 28, 29, 30, 31, 33, 34, 35, 38, 39, 41, 42, 43, 44, 47, 52, 54, 55, 56, 57, 64, 66, 67, 70, 71, 72, 75, 78, 79, 81, 84, 85, 86, 87, 90, 93, 94, 95, 97, 98, 1...
[ "nonn" ]
A018391
[ 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320 ]
[ "nonn", "fini", "full", "easy" ]
A366251
[ 1, 3, 5, 7, 9, 11, 13, 17, 19, 21, 23, 25, 27, 29, 31, 35, 37, 39, 41, 43, 47, 49, 53, 55, 57, 59, 61, 63, 65, 67, 71, 73, 77, 79, 81, 83, 85, 89, 91, 93, 95, 97, 101, 103, 107, 109, 111, 113, 115, 117, 119, 121, ...
[ "nonn", "easy" ]
A214571
[ 1, 1, 2, 3, 2, 5, 6, 3, 6, 16, 12, 8, 10, 34, 21, 32, 5, 30, 11, 68, 48, 100, 15, 108, 0, 24, 9, 10, 0, 36, 16, 126, 81, 260, 30, 336, 7, 128, 45, 40, 0, 264, 0, 0, 15, 0, 0, 18, 0, 40, 0, 0, 0, 24, 19, 222...
[ "nonn", "tabf", "hard" ]
A204247
[ 1, 0, -1, -8, -204, -24768, -17867520, -90077184000, -3632037470208000, -1.317998813773824e+21, -4.7827559303559245e+27, -1.9091231857943795e+35 ]
[ "sign" ]
A265666
[ 48, 4912, 951040, 234168152, 66434312368, 20573458824776, 6752109661033720, 2310220535915091000 ]
[ "nonn" ]
A273260
[ 26487, 28651, 61054, 65821, 45849660, 84568740, 104086845, 106978404, 107569740, 107804658, 108489045, 118678440, 130445658, 130567806, 135807860, 137678445, 140679804, 140884695, 143450660, 143976180, 146859800, 148478520, 149528648, 150468056, 150568824 ]
[ "nonn", "base" ]
A307459
[ 0, 0, 0, 0, 2, 4, 23, 54, 64 ]
[ "nonn", "hard", "more" ]
A043421
[ 8, 16, 24, 32, 40, 48, 56, 65, 66, 67, 68, 69, 70, 71, 72, 80, 88, 96, 104, 112, 120, 129, 130, 131, 132, 133, 134, 135, 136, 144, 152, 160, 168, 176, 184, 193, 194, 195, 196, 197, 198, 199, 200, 208, 216, 224, 232, 240, ...
[ "nonn", "base" ]
A342381
[ 1, 1, 1, 5, 2, 1, 29, 15, 3, 1, 233, 116, 30, 4, 1, 2329, 1165, 290, 50, 5, 1, 27949, 13974, 3495, 580, 75, 6, 1, 391285, 195643, 48909, 8155, 1015, 105, 7, 1, 6260561, 3130280, 782572, 130424, 16310, 1624, 140, 8, 1, 11269009...
[ "nonn", "tabl" ]
A122003
[ 1, 13, 25, 325, 833, 2087, 29773 ]
[ "more", "nonn" ]
A087871
[ 5, 61, 181, 613, 1301, 1741, 8581, 9661, 14621, 19013, 23981, 37813, 44701, 49613, 68821, 71821, 94613, 101701, 105341, 163021, 167621, 177013, 244301, 255613, 273061, 303421, 335381, 382813, 456013, 479221, 511061, 552301, 595141, 603901 ]
[ "nonn", "easy" ]
A024590
[ 4, 12, 38, 58, 118, 154, 253, 307, 451, 525, 731, 829, 1109, 1235, 1586, 1742, 2170, 2358, 2888, 3112, 3756, 4020, 4767, 5073, 5929, 6279, 7277, 7675, 8798, 9246, 10500, 11000, 12391, 12945, 14479, 15089, 16809, 17479, 19397, 20131, 222...
[ "nonn" ]
A156023
[ 0, 0, 1, 3, 5, 8, 11, 14, 18, 22, 26, 31, 36, 41, 47, 53, 59, 65, 72, 79, 86, 93, 100, 108, 116, 124, 132, 141, 150, 159, 168, 177, 186, 196, 206, 216, 226, 237, 248, 259, 270, 281, 292, 303, 315, 327, 339, 351, 363, 3...
[ "nonn", "base" ]
A332292
[ 1, 1, 1, 2, 1, 2, 2, 1, 1, 2, 2, 1, 1, 1, 2, 2, 1, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 2, 1, 2, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 2, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 1, 1...
[ "nonn", "more" ]
A248104
[ 4, 11, 16, 19, 28, 35, 44, 47, 52, 59, 64, 67, 76, 79, 84, 91, 100, 107, 112, 115, 124, 131, 140, 143, 148, 155, 164, 171, 176, 179, 188, 191, 196, 203, 208, 211, 220, 227, 236, 239, 244, 251, 256, 259, 268, 271, 276, 283,...
[ "nonn", "easy" ]
A384900
[ 1, 1, 0, 1, 1, 0, 1, 2, 2, 0, 1, 3, 5, 3, 0, 1, 4, 9, 10, 4, 0, 1, 5, 14, 22, 18, -3, 0, 1, 6, 20, 40, 48, 14, -50, 0, 1, 7, 27, 65, 101, 72, -81, -237, 0, 1, 8, 35, 98, 185, 200, -37, -562, -872, 0, 1, 9...
[ "sign", "tabl" ]
A170245
[ 1, 44, 1892, 81356, 3498308, 150427244, 6468371492, 278139974156, 11960018888708, 514280812214444, 22114074925221092, 950905221784507000, 40888924536733800000, 1.7582237550795534e+21, 7.56036214684208e+22 ]
[ "nonn" ]
A208552
[ 16, 256, 1008, 3969, 10080, 25600, 52000, 105625, 187200, 331776, 536256, 866761, 1310848, 1982464, 2851200, 4100625, 5670000, 7840000, 10502800, 14070001, 18364896, 23970816, 30614688, 39100009, 49023520, 61465600, 75852000, 93605625 ]
[ "nonn" ]
A126966
[ 1, 0, -2, -8, -26, -80, -244, -752, -2362, -7584, -24892, -83376, -284324, -984672, -3455144, -12259168, -43908026, -158531392, -576352364, -2107982128, -7750490636, -28629222112, -106190978264, -395347083808, -1476813394916, -5533435084480, -20790762971864, -78...
[ "sign" ]
A170689
[ 1, 8, 56, 392, 2744, 19208, 134456, 941192, 6588344, 46118408, 322828856, 2259801992, 15818613944, 110730297608, 775112083256, 5425784582792, 37980492079544, 265863444556808, 1861044111897656, 13027308783283592 ]
[ "nonn" ]
A340730
[ 0, 1, 2, 4, 8, 3, 6, 12, 20, 11, 21, 10, 20, 7, 14, 28, 44, 27, 9, 18, 36, 15, 30, 53, 29, 54, 80, 107, 79, 50, 80, 49, 17, 34, 68, 33, 66, 103, 65, 26, 52, 93, 51, 94, 138, 183, 137, 90, 42, 84, 134, 83, 31, 6...
[ "nonn" ]
A269265
[ 1, 1, 2, 4, 6, 36, 42, 1764, 1806, 3261636, 3263442, 10650053687364, 10650056950806, 1.134237130554112e+26, 1.1342371305542185e+26, 1.2864938683278672e+52, 1.2864938683278672e+52 ]
[ "nonn" ]
A342877
[ 1, 1, 1, 0, 1, 0, 1, 1, 0, 1, 1, 0, 1, 1, 1, 0, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 1, 0, 1, 0, 0, 0, 1, 1, 0, 0, 0, 1, 0, 1, 1, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 0...
[ "nonn" ]
A092200
[ 1, 3, 3, 4, 6, 6, 7, 9, 9, 10, 12, 12, 13, 15, 15, 16, 18, 18, 19, 21, 21, 22, 24, 24, 25, 27, 27, 28, 30, 30, 31, 33, 33, 34, 36, 36, 37, 39, 39, 40, 42, 42, 43, 45, 45, 46, 48, 48, 49, 51, 51, 52, 54, 54, 5...
[ "easy", "nonn" ]
A012287
[ 0, 0, 2, -3, 4, -20, 350, -3171, 21320, -172080, 2459578, -38861515, 540169100, -7467693012, 125140866006, -2480288923035, 50275271244432, -1015574149625984, 21888753352226416, -522647511904669500 ]
[ "sign" ]
A220866
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[ "nonn" ]
A015815
[ 1, 1, 0, -1, -1, 0, 1, 0, -1, -1, 0, 1, 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, -1, -1, 0, 1, 1, 0, -1, 0, 1, 1, 0, -1, -1, 0, 0, 0, 0, 0, 0,...
[ "sign" ]
A145107
[ 1, 7, 220, 2606, 24229, 169840, 951944, 4391259, 17128360, 57582491, 169556652, 442817680, 1036416952, 2192191607, 4219669696, 7433573145, 12041305271, 18003453305, 24921751416, 32017113319, 38243274851, 42524815013, 44052440432, 42524815013, 38243274851, 3201711331...
[ "fini", "full", "easy", "less", "nonn" ]
A270141
[ 1, 2, 6, 42, 720, 1806 ]
[ "nonn", "more" ]
A197867
[ 1, 4, 12, 48, 461, 6832, 158136, 5845234, 360941736 ]
[ "nonn" ]
A211487
[ 0, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 0, 0, 1, 1, 1, 0, 0, 1, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 0, 0, 1, 1, 0, 1, 1, 0, 0, 1, 1, 0, 0, 0, 1, 1, 0, 1, 1, 0, 0...
[ "nonn" ]
A236252
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[ "nonn" ]
A237612
[ 1, 1, 3, 2, 2, 4, 1, 1, 1, 1, 5, 2, 2, 2, 28, 34, 9, 3, 3, 5, 20, 7, 1, 1, 1, 1, 1, 1, 2, 14, 5, 17, 3, 16, 12, 23, 18, 4, 4, 30, 46, 10, 50, 23, 36, 18, 40, 14, 2, 2, 3, 3, 1, 1, 1, 1, 1, 1, 32, 7,...
[ "nonn" ]
A356718
[ 0, 0, 0, 1, 0, 1, 2, 1, 1, 2, 4, 2, 2, 2, 4, 5, 4, 3, 3, 4, 5, 7, 5, 5, 4, 5, 5, 7, 8, 7, 6, 6, 6, 6, 7, 8, 11, 8, 8, 7, 8, 7, 8, 8, 11, 13, 11, 9, 9, 9, 9, 9, 9, 11, 13, 15, 13, 12, 10, 11, 10, ...
[ "nonn", "tabl", "easy", "look" ]
A243953
[ 1, 1, 2, 8, 56, 592, 8512, 155584, 3456896, 90501632, 2728876544, 93143809024, 3550380249088, 149488545697792, 6890674623094784, 345131685337530400, 18664673706719020000, 1.0839316017310532e+21, 6.727841800215218e+22, 4.4447113145489676e+24 ]
[ "nonn", "easy" ]
A039828
[ 1, 1, 1, 2, 3, 5, 8, 14, 23, 40, 69, 123, 221, 397, 722, 1314, 2410, 4441, 8215, 15260, 28460, 53222, 99820, 187692, 353743, 668273, 1264854, 2399207, 4559828, 8679280, 16547220, 31592878, 60400688, 115633260, 221625505, 425313967 ]
[ "nonn" ]
A142107
[ 23, 59, 131, 167, 239, 311, 347, 383, 419, 491, 563, 599, 743, 887, 1031, 1103, 1283, 1319, 1427, 1499, 1571, 1607, 1787, 1823, 1931, 2003, 2039, 2111, 2399, 2543, 2579, 2687, 2903, 2939, 3011, 3083, 3119, 3191, 3299, 3371, 3407, 3623...
[ "nonn", "easy" ]
A115140
[ 1, -1, -1, -2, -5, -14, -42, -132, -429, -1430, -4862, -16796, -58786, -208012, -742900, -2674440, -9694845, -35357670, -129644790, -477638700, -1767263190, -6564120420, -24466267020, -91482563640, -343059613650, -1289904147324, -4861946401452, -18367353072152 ]
[ "sign", "easy" ]
A342985
[ 1, 0, 0, 0, 2, 0, 0, 3, 3, 0, 0, 4, 36, 4, 0, 0, 5, 135, 135, 5, 0, 0, 6, 360, 1368, 360, 6, 0, 0, 7, 798, 7350, 7350, 798, 7, 0, 0, 8, 1568, 28400, 73700, 28400, 1568, 8, 0, 0, 9, 2826, 89073, 474588, 474588, 8907...
[ "nonn", "tabl" ]
A034814
[ 9, 51, 63, 87, 111, 123, 153, 177, 207, 211, 239, 263, 273, 289, 327, 333, 343, 359, 407, 471, 489, 497, 513, 541, 597, 621, 651, 659, 663, 681, 687, 693, 697, 747, 753, 793, 819, 831, 869, 909, 977, 987, 1027, 1041, 1089, 113...
[ "nonn", "base" ]
A253935
[ 512, 2440, 2440, 8392, 8384, 8392, 28540, 30184, 30184, 28540, 91296, 109666, 124496, 109666, 91296, 263476, 299727, 451721, 451721, 299727, 263476, 709704, 756553, 992616, 1664470, 992616, 756553, 709704, 1850176, 1786831, 2326216 ]
[ "nonn", "tabl" ]
A090668
[ 2, 1, 1, 4, 5, 9, 10, 15, 23, 34, 31, 43, 41, 49, 60, 75, 73, 83, 81, 94, 105, 122, 116, 133, 155, 171, 185, 203, 188, 205, 211, 229, 251, 266, 298, 314, 301, 326, 346, 372, 358, 374, 369, 386, 407, 424, 422, 459, 482, ...
[ "nonn", "less" ]
A056933
[ 1, 336, 30900, 1301610, 32046856, 530962446, 6479344016, 61951251333, 485198553532, 3217462615688, 18528857431906, 94529315562186, 434088353496446, 1817613939845670, 7014049051387480, 25167786776727516 ]
[ "nonn", "easy" ]
A137919
[ 3, 3, 1, 4, 7, 5, 3, 1, 6, 1, 3, 5, 1, 3, 4, 3, 4, 1, 4, 4, 3, 9, 5, 3, 1, 6, 3, 6, 5, 4, 4, 4, 5, 5, 7, 7, 10, 4, 4, 7, 4, 6, 1, 5, 9, 3, 3, 1, 5, 4, 3, 6, 9, 3, 1, 17, 3, 9, 7, 4, 6, 1, 6, ...
[ "nonn" ]
A345958
[ 2, 6, 8, 15, 18, 24, 32, 35, 50, 54, 60, 72, 77, 96, 98, 128, 135, 140, 143, 150, 162, 200, 216, 221, 240, 242, 288, 294, 308, 315, 323, 338, 375, 384, 392, 437, 450, 486, 512, 540, 560, 572, 578, 600, 648, 667, 693, 722, ...
[ "nonn" ]
A188015
[ 1, 3, 4, 6, 8, 9, 11, 14, 16, 17, 19, 21, 22, 24, 27, 29, 30, 32, 35, 37, 38, 40, 42, 43, 45, 48, 50, 51, 53, 55, 56, 58, 61, 63, 64, 66, 69, 71, 72, 74, 76, 77, 79, 82, 84, 85, 87, 90, 92, 93, 95, 97, 98, 100,...
[ "nonn" ]
A149987
[ 1, 2, 5, 17, 57, 197, 727, 2749, 10399, 40301, 159574, 631160, 2522298, 10221848, 41531613, 169372736, 696855374, 2879429468, 11915981127, 49573590322, 207133252404, 866652990044, 3636829064055, 15317311427914, 64620435352636, 273084047111032, 1157214293358466, ...
[ "nonn", "walk" ]
A219811
[ 6, 15, 62, 169, 414, 987, 2359, 5569, 12737, 27982, 59028, 119947, 235727, 449688, 835225, 1513962, 2683186, 4656429, 7922316, 13228338, 21698084, 34992721, 55530195, 86778791, 133645391, 202983064, 304247572, 450338045, 658663533 ]
[ "nonn" ]
A000168
[ 1, 2, 9, 54, 378, 2916, 24057, 208494, 1876446, 17399772, 165297834, 1602117468, 15792300756, 157923007560, 1598970451545, 16365932856990, 169114639522230, 1762352559231660, 18504701871932430, 195621134074714270, 2080697516976506000, 22254416920705240000, 2392349818975813...
[ "nonn", "nice", "easy" ]
A063896
[ 0, 1, 1, 3, 7, 31, 255, 8191, 2097151, 17179869183, 36028797018963970, 6.189700196426902e+26, 2.2300745198530623e+43 ]
[ "nonn", "easy" ]
A254867
[ 1, 2, 4, 22, 66, 96, 106, 144, 180, 222, 324, 378, 466, 492, 604, 742, 760, 778, 784, 960, 984, 990, 994, 1050, 1150, 1162, 1186, 1248, 1302, 1308, 1356, 1360, 1380, 1744, 1830, 1866, 1870, 1956, 2052, 2070, 2112, 2182, 2212, 2380...
[ "nonn" ]
A131806
[ 0, 2, 4, 6, 0, 2, 4, 6, 0, 2, 4, 6, 0, 2, 4, 6, 0, 2, 4, 6, 0, 2, 4, 6, 0, 2, 4, 6, 0, 2, 4, 6, 0, 2, 4, 6, 0, 2, 4, 6, 0, 2, 4, 6, 0, 2, 4, 6, 0, 2, 4, 6, 0, 2, 4, 6, 0, 2, 4, 6, 0, 2, 4, 6...
[ "nonn", "easy" ]