id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A346107
[ 1, 2, 6, 4, 30, 36, 210, 2, 6, 900, 2310, 1296, 30030, 44100, 729000000, 4, 510510, 36, 9699690, 810000, 85766121000000, 5336100, 223092870, 216, 39690000, 901800900, 1260, 1944810000, 6469693230, 24300000, 200560490130, 60, 151939915084881000000, 26...
[ "nonn" ]
A014399
[ 1, 1, 0, -1, -1, -1, 0, 1, 1, 0, 0, 0, 0, -1, -1, 0, 1, 1, 1, 0, -1, -1, 0, 0, 0, 0, 1, 1, 0, -1, -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...
[ "sign" ]
A249505
[ 3, 5, 7, 11, 17, 19, 23, 29, 31, 41, 43, 47, 53, 59, 71, 79, 83, 101, 103, 107, 109, 127, 131, 137, 139, 149, 163, 167, 179, 191, 197, 199, 211, 223, 227, 239, 251, 263, 269, 271, 281, 293, 311, 331, 347, 359, 367, 379, ...
[ "nonn" ]
A236645
[ 81, 518, 518, 3313, 5572, 3313, 21276, 59602, 59602, 21276, 136697, 642482, 1059502, 642482, 136697, 877196, 6911962, 19049512, 19049512, 6911962, 877196, 5629192, 74396558, 341611331, 573664384, 341611331, 74396558, 5629192, 36133600 ]
[ "nonn", "tabl" ]
A133919
[ 9, 1, 9, 9, 3, 7, 6, 6, 7, 7, 1, 6, 1, 9, 9, 4, 2, 2, 3, 3, 2, 1, 6, 8, 2, 2, 3, 2, 8, 6, 7, 7, 1, 1, 3, 1, 7, 0, 7, 4, 1, 3, 3, 0, 7, 8, 0, 7, 3, 6, 5, 5, 4, 6, 8, 3, 9, 8, 2, 3, 6, 7, 2, 6...
[ "nonn", "cons" ]
A166400
[ 1702, 1863, 3036, 3197, 4232, 4393, 4646, 5842, 7015, 7176, 7429, 8211, 8372, 8625, 8786, 9821, 9982, 10511, 10672, 10925, 12259, 13041, 13455, 13708, 13869, 14651, 14904, 16238, 16399, 17020, 17181, 17434, 17595, 17848, 18630, 18791, 21022, ...
[ "nonn", "base" ]
A290551
[ 1, 1, 5, 15, 19, 63, 7, 255, 15, 1023, 1951, 4095, 63, 16383, 127, 65535, 255, 262143, 14847, 1048575, 1023, 4194303, 67583, 16777215, 4095, 67108863, 8191, 268435455, 8404991, 1073741823, 100696063, 4294967295, 16842751, 17179869183, 4298768383, ...
[ "nonn", "easy" ]
A188266
[ 1, 4, 28, 240, 2316, 24240, 269392, 3135808, 37869676, 471189680, 6008850512, 78221787968, 1036166807056, 13931585235520, 189737945839552, 2613162137898752, 36344513366001460, 509885938301354700, 7208577711881001000 ]
[ "nonn", "easy" ]
A328493
[ 19, 41, 155, 341, 929, 1805, 3659, 5255, 10505, 11771, 19181, 22649, 32579, 37055, 39401, 52211, 57839, 73169, 79805, 97655, 121451, 176819, 187055, 213905, 273005, 325469, 360599, 382541, 412805, 436259, 656909, 676505, 686411, 737021, 778805, 1...
[ "nonn" ]
A012813
[ 1, -1, 1, -145, 6977, -568865, 80708417, -14347965489, 3496685652353, -1086579978065473, 419435785375158140, -197705949756543170000, 1.114881027005469e+23, -7.415124825198821e+25 ]
[ "sign" ]
A349643
[ 3, 17, 347, 41, 211, 271, 23, 191, 33151, 541, 70891, 152681, 856637, 158047, 2010581, 24239, 7069423, 15149419, 9472693, 347957, 479691493, 994339579, 132480637, 4462552643, 1342424483, 4757283367, 20674291411, 21170786093, 9941224877, 68864319317, 866006...
[ "nonn" ]
A072368
[ 6, 54, 214, 594, 1334, 2614, 4645, 7676, 11992, 17912, 25791, 36021, 49028, 65269, 85247, 109493, 138575, 173094, 213694, 261048, 315863, 378888, 450907, 532730, 625213, 729244, 845748, 975679, 1120035, 1279848, 1456176, 1650123, 1862831, 2095469, ...
[ "nonn", "hard" ]
A278621
[ 3, 46, 357, 1952, 8518, 31605, 103546, 307087, 838936, 2138608, 5137407, 11719956, 25549096, 53493458, 108027996, 211167710, 400765157, 740380790, 1334456849, 2351234708, 4056807390, 6864961455, 11409118950, 18644841765, 29994129570 ]
[ "nonn" ]
A347864
[ 2, 3, 5, 7, 13, 17, 23, 29, 31, 37, 43, 47, 53, 59, 67, 71, 73, 79, 83, 97, 103, 107, 113, 131, 137, 139, 167, 173, 179, 197, 223, 229, 233, 239, 271, 283, 293, 307, 311, 313, 317, 331, 337, 347, 353, 359, 367, 373, 379,...
[ "nonn", "fini" ]
A135002
[ 7, 3, 5, 7, 5, 8, 8, 8, 2, 3, 4, 2, 8, 8, 4, 6, 4, 3, 1, 9, 1, 0, 4, 7, 5, 4, 0, 3, 2, 2, 9, 2, 1, 7, 3, 4, 8, 9, 1, 6, 2, 2, 2, 6, 2, 0, 6, 3, 5, 3, 5, 6, 6, 9, 0, 1, 5, 6, 7, 3, 6, 0, 3, 3...
[ "nonn", "cons" ]
A129940
[ 2, 3, 7, 11, 23, 43, 59, 107, 151, 251, 619, 919, 1019, 3067, 3691, 4091 ]
[ "nonn", "fini", "full", "base" ]
A295458
[ 1, 5545451340, 188242272043069770000, 7.383354803839076e+30, 3.07213802011837e+41, 1.320298004870443e+52, 5.791387084441403e+62 ]
[ "nonn" ]
A029747
[ 1, 2, 3, 4, 5, 6, 8, 10, 12, 16, 20, 24, 32, 40, 48, 64, 80, 96, 128, 160, 192, 256, 320, 384, 512, 640, 768, 1024, 1280, 1536, 2048, 2560, 3072, 4096, 5120, 6144, 8192, 10240, 12288, 16384, 20480, 24576, 32768, 40960, 49152, ...
[ "nonn", "easy" ]
A347832
[ 0, 0, 1, 1, 0, 3, 2, 1, 4, 3, 4, 2, 7, 4, 7, 7, 3, 12, 5, 11, 8, 10, 7, 12, 6, 16, 4, 19, 7, 22, 13, 17, 12, 19, 5, 11, 22, 28, 8, 10, 27, 29, 12, 27, 6, 16, 29, 39, 9, 37, 19, 28, 22, 28, 20, 32, 10, 4...
[ "nonn", "tabf", "easy" ]
A364989
[ 1, 1, 10, 207, 6628, 288885, 15969606, 1070760523, 84448152328, 7660906993737, 785932068816010, 89973000854464430, 11370915080258640000, 1.5725207789207442e+21, 2.362127547075919e+23, 3.829919631141504e+25, 6.666717272317556e+27 ]
[ "nonn" ]
A332765
[ 6, 10, 15, 22, 35, 55, 77, 91, 143, 187, 221, 253, 323, 391, 493, 551, 667, 713, 899, 1073, 1189, 1271, 1517, 1591, 1763, 1961, 2183, 2419, 2537, 2773, 3127, 3233, 3599, 3953, 4189, 4331, 4757, 4897, 5293, 5723, 5963, 6499, 6887, ...
[ "nonn" ]
A361026
[ 1, 2, 1, 3, 1, 4, 1, 5, 6, 2, 1, 7, 1, 2, 1, 8, 1, 9, 1, 3, 1, 2, 1, 10, 11, 2, 12, 3, 1, 13, 1, 14, 1, 2, 1, 15, 1, 2, 1, 5, 1, 4, 1, 3, 6, 2, 1, 16, 17, 18, 1, 3, 1, 19, 1, 5, 1, 2, 1, 20, 1, ...
[ "nonn" ]
A010023
[ 1, 44, 170, 380, 674, 1052, 1514, 2060, 2690, 3404, 4202, 5084, 6050, 7100, 8234, 9452, 10754, 12140, 13610, 15164, 16802, 18524, 20330, 22220, 24194, 26252, 28394, 30620, 32930, 35324, 37802, 40364, 43010, 45740, 48554, 51452, 54434, 57500, ...
[ "nonn", "easy" ]
A026094
[ 1, 1, 2, 3, 4, 6, 16, 28, 93, 156, 518, 864, 2932, 4861, 16709, 27600, 95849, 157899, 552749, 908768, 3201848, 5256009, 18616751, 30523044, 108592239, 177865347, 635175153, 1039511496, 3724193120, 6090715215, 21881993115, 35765791320, 128810517855 ]
[ "nonn" ]
A010398
[ 0, 1, 3, 4, 7, 9, 10, 11, 12, 16, 21, 25, 26, 27, 28, 30, 33, 34, 36 ]
[ "nonn", "fini", "full" ]
A354192
[ 1, 2, 4, 8, 15, 16, 30, 32, 60, 64, 91, 120, 128, 182, 187, 225, 240, 256, 364, 374, 450, 480, 512, 551, 728, 748, 851, 900, 960, 1024, 1102, 1271, 1365, 1456, 1496, 1702, 1800, 1920, 2048, 2204, 2279, 2542, 2730, 2805, 2867, ...
[ "nonn" ]
A227918
[ 1, 0, 5, 22, 137, 956, 7653, 68874, 688745, 7576192, 90914309, 1181886014, 16546404201, 248196063012, 3971137008197, 67509329139346, 1215167924508233, 23088190565656424, 461763811313128500, 9697040037575698000, 213334880826665370000, 4.906702259013304e+21, 1.1776085421631...
[ "nonn" ]
A071981
[ 0, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 1, 0, 0, 0, 0, 1, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 1, 0, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 0, 1, 0, 1, 0, 0, 1...
[ "nonn", "base" ]
A209230
[ 1, 1, 2, 5, 13, 34, 88, 226, 578, 1476, 3768, 9620, 24564, 62728, 160192, 409096, 1044744, 2668048, 6813600, 17400400, 44436688, 113481248, 289805440, 740097568, 1890041888, 4826739776, 12326402432 ]
[ "nonn", "easy" ]
A133727
[ 1, 1, 2, 1, 0, 5, 1, 2, 0, 7, 1, 0, 0, 0, 14, 1, 2, 5, 0, 0, 13, 1, 0, 0, 0, 0, 0, 27, 1, 2, 0, 7, 0, 0, 0, 26, 1, 0, 5, 0, 0, 0, 0, 0, 39, 1, 2, 0, 0, 14, 0, 0, 0, 0, 38 ]
[ "nonn", "tabl" ]
A373501
[ 168, 5616, 120960, 372000, 5630688, 49448448, 84913920, 212427600, 810534816, 17108582400, 6950204928, 16934047920, 78156525216, 304668000000, 846083360304, 499631102880, 851974934400, 5492021821440, 3509844434208, 7980059337600, 11681731985616, 23800278205248 ]
[ "nonn" ]
A160586
[ 1, 1, 2, 3, 8, 30, 720, 210, 40320, 90720, 1209600, 226800, 43545600, 5241600, 7925299200, 14859936000, 634023936000, 8083805184000, 582033973248000, 115194223872000, 221172909834240000, 1161157776629760000 ]
[ "nonn", "frac" ]
A213340
[ 5, 13, 17, 21, 29, 37, 41, 45, 53, 61, 65, 69, 77, 85, 89, 93, 97, 101, 109, 113, 117, 125, 133, 137, 141, 149, 153, 157, 161, 165, 173, 181, 185, 189, 197, 205, 209, 213, 221, 229, 233, 237, 241, 245, 253, 257 ]
[ "nonn" ]
A157518
[ 6, 104, 104, 908, 1818, 908, 5298, 16560, 16560, 5298, 23261, 105510, 158768, 105510, 23261, 82603, 522325, 1086904, 1086904, 522325, 82603, 249245, 2125965, 5916957, 7962500, 5916957, 2125965, 249245, 661751, 7394811, 26917679 ]
[ "nonn", "tabl" ]
A249176
[ 2, 395, 2258, 11177, 39066, 115437, 649836, 2588243, 7860952, 20320619, 45638364, 93764799, 177392152, 386650439, 769301460, 1432768935, 2497732488, 4158929163, 6601793994, 10107028541 ]
[ "nonn" ]
A025188
[ 2, 10, 60, 343, 1968, 11319, 65351, 378690, 2201772, 12839896, 75076505, 440016174, 2584289200, 15206283135, 89625150180, 529040216175, 3127061645796, 18506252646420, 109644576096980, 650280444390382 ]
[ "nonn" ]
A238410
[ 0, 2, 6, 14, 24, 38, 54, 74, 96, 122, 150, 182, 216, 254, 294, 338, 384, 434, 486, 542, 600, 662, 726, 794, 864, 938, 1014, 1094, 1176, 1262, 1350, 1442, 1536, 1634, 1734, 1838, 1944, 2054, 2166, 2282, 2400, 2522, 2646, 2774, 29...
[ "nonn", "easy" ]
A262965
[ 12, 10, 14, 15, 26, 57, 38, 85, 87, 62, 111, 129, 86, 603, 159, 177, 122, 201, 219, 146, 237, 927, 267, 545, 309, 206, 327, 218, 1057, 1016, 1359, 411, 278, 1267, 302, 471, 489, 3088, 519, 537, 362, 1561, 386, 597, 398, 1687, ...
[ "nonn" ]
A084313
[ 1, 2, 21, 16, 5, 6, 315, 24, 63, 20, 121, 12, 65, 14, 105, 320, 697, 306, 2185, 60, 399, 286, 299, 216, 575, 156, 513, 644, 1189, 210, 837, 384, 231, 374, 1505, 684, 3515, 1026, 1131, 1480, 2747, 966, 1591, 1012, 1935, 782, ...
[ "nonn" ]
A324093
[ 0, 0, 0, 0, 0, 0, 0, 0, 1, 6, 127, 33146, 75146405, 346026751657 ]
[ "nonn", "more" ]
A236617
[ 912752, 26549772, 676215558, 25479024204, 1284370885164, 72131246587408, 4204056529253296, 223629428582739900, 12730876117114352000, 742306742417709900000, 4.407208244985789e+22, 2.362457945063332e+24 ]
[ "nonn" ]
A337129
[ 1, 2, 3, 4, 6, 16, 8, 12, 32, 84, 16, 24, 64, 168, 440, 32, 48, 128, 336, 880, 2304, 64, 96, 256, 672, 1760, 4608, 12064, 128, 192, 512, 1344, 3520, 9216, 24128, 63168, 256, 384, 1024, 2688, 7040, 18432, 48256, 126336, 330752, ...
[ "nonn", "tabl" ]
A040642
[ 25, 1, 5, 2, 12, 2, 5, 1, 50, 1, 5, 2, 12, 2, 5, 1, 50, 1, 5, 2, 12, 2, 5, 1, 50, 1, 5, 2, 12, 2, 5, 1, 50, 1, 5, 2, 12, 2, 5, 1, 50, 1, 5, 2, 12, 2, 5, 1, 50, 1, 5, 2, 12, 2, 5, 1, 50, 1, 5, 2, 1...
[ "nonn", "cofr", "easy" ]
A336286
[ 1, 1, 5, 57, 859, 16087, 362781, 9593105, 291347603, 9998539791, 382732896853, 16169762600329, 747423640472235, 37523173542935210, 2033249827596197600, 118278700627740330000, 7.352204062275501e+21, 4.863437591628888e+23, 3.411219300266685e+25 ]
[ "nonn", "easy" ]
A237016
[ 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 3, 1, 4, 2, 2, 1, 0, 1, 2, 2, 2, 2, 6, 4, 2, 2, 4, 2, 2, 4, 1, 6, 5, 6, 3, 3, 8, 3, 2, 4, 6, 1, 2, 4, 3, 3, 3, 5, 6, 5, 5, 3, 2, 5, 4, 4, 3, 6, 5, 7, 10, 7, 4, ...
[ "nonn" ]
A254796
[ 1, 4, 25, 200, 2025, 24300, 342225, 5475600, 98903025, 1978060500, 43616234025, 1046789616600, 27260146265625, 763284095437500, 22925783009390624, 733625056300500000, 24966177697226390000, 898782397100150100000, 3.417869726750293e+22 ]
[ "nonn", "frac", "easy" ]
A020893
[ 1, 2, 5, 10, 13, 17, 26, 29, 34, 37, 41, 53, 58, 61, 65, 73, 74, 82, 85, 89, 97, 101, 106, 109, 113, 122, 130, 137, 145, 146, 149, 157, 170, 173, 178, 181, 185, 193, 194, 197, 202, 205, 218, 221, 226, 229, 233, 241, 257,...
[ "nonn" ]
A372459
[ 1, 3, 21, 171, 1469, 12988, 116985, 1067545, 9836541, 91313469, 852701256, 8001080244, 75375985841, 712487600698, 6754115819535, 64185511063246, 611287650124125, 5832863405199183, 55750924705841640, 533676328608473100, 5115556211638072000 ]
[ "nonn" ]
A362275
[ 1, 1, -1, 4, -3, -44, 595, -5214, 36953, -176840, -498969, 31239550, -605916971, 9001842708, -110410388101, 998140500826, -1114748107215, -247879285927184, 8410011463871695, -201620611378992900, 4024515940445771000, -66832538504513544000 ]
[ "sign" ]
A117590
[ 2, 3, 5, 7, 11, 16, 23, 35, 52, 77, 116, 173, 260, 390, 584, 876, 1314, 1971, 2956, 4434, 6651, 9976, 14964, 22446, 33669, 50503, 75754, 113631, 170446, 255669, 383503, 575254, 862880, 1294320, 1941480, 2912220, 4368329, 6552494, 9828740, ...
[ "nonn" ]
A094458
[ 3, 71, 433, 587, 751, 1249, 2213, 2531, 2621, 4177, 4211, 4783, 5749, 5903, 6197, 6569, 6719, 7213, 8101, 8513, 8669, 9091, 10091, 10093, 10151, 10723, 10771, 12373, 12503, 13003, 16217, 17359, 18493, 19429, 20287, 20441, 20479, 22051, 2263...
[ "easy", "nonn" ]
A322274
[ 1, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 113, 19, 29, 79, 157, 67, 167, 1, 173, 179, 181, 71, 193, 197, 31, 211, 389, 103, 83, 181, 233, 239,...
[ "nonn", "fini", "full" ]
A280517
[ 1, 2, 14, 263, 13462, 2104021, 1366427911, 6266456586228 ]
[ "nonn", "hard", "more" ]
A282628
[ 1, 1, 1, 1, 3, 2, 1, 9, 16, 8, 1, 27, 98, 120, 48, 1, 81, 544, 1232, 1152, 384, 1, 243, 2882, 10800, 17760, 13440, 3840, 1, 729, 14896, 87128, 224640, 289920, 184320, 46080, 1, 2187, 75938, 669480, 2544528, 4986240, 5295360, 29030...
[ "nonn", "easy", "tabl" ]
A121931
[ 0, 1, 2, 58, 75, 347 ]
[ "nonn", "hard", "more" ]
A017729
[ 1, 66, 2211, 50116, 864501, 12103014, 143218999, 1473109704, 13442126049, 110524147514, 828931106355, 5727160371180, 36749279048405, 220495674290430, 1244225590638855, 6635869816740560, 33594090947249084 ]
[ "nonn" ]
A113655
[ 3, 2, 1, 6, 5, 4, 9, 8, 7, 12, 11, 10, 15, 14, 13, 18, 17, 16, 21, 20, 19, 24, 23, 22, 27, 26, 25, 30, 29, 28, 33, 32, 31, 36, 35, 34, 39, 38, 37, 42, 41, 40, 45, 44, 43, 48, 47, 46, 51, 50, 49, 54, 53, 52, 5...
[ "nonn", "easy" ]
A222144
[ 1, 4, 4, 16, 52, 16, 64, 676, 676, 64, 256, 8788, 28564, 8788, 256, 1024, 114244, 1206964, 1206964, 114244, 1024, 4096, 1485172, 50999956, 165770032, 50999956, 1485172, 4096, 16384, 19307236, 2154990196, 22767656980, 22767656980 ]
[ "nonn", "tabl" ]
A207312
[ 26, 676, 15390, 347502, 7791488, 174545777, 3908531208, 87515884741, 1959513380192, 43873997112932, 982347997376840, 21994968695108692, 492471697249839500, 11026538323840184000, 246886363177103820000 ]
[ "nonn" ]
A095527
[ 52, 57, 61, 67, 74, 103, 124, 151, 232, 1003, 2111, 1000011, 1.1111111111111112e+66 ]
[ "nonn", "fini", "full" ]
A241339
[ 1, 0, 0, 0, 1, 2, 4, 5, 9, 12, 17, 25, 33, 44, 62, 77, 104, 131, 180, 222, 278, 368, 454, 581, 717, 883, 1112, 1345, 1745, 2093, 2519, 3068, 3820, 4688, 5570, 6744, 8151, 9738, 11716, 14199, 16723, 20210, 24151, 28582, 33728, ...
[ "nonn", "easy" ]
A154412
[ 5, 29, 73, 137, 449, 593, 757, 941, 1613, 1877, 2161, 2789, 3881, 5153, 6101, 7129, 7673, 8237, 8821, 12041, 13469, 15761, 17389, 18233, 26729, 27773, 28837, 29921, 34457, 38069, 39313, 40577, 45833, 60373, 63521, 66749, 71741, 75169, 76913...
[ "nonn", "easy" ]
A372758
[ 1, 2, 2, 2, 3, 4, 4, 5, 5, 5, 6, 6, 6, 7, 8, 8, 8, 9, 10, 10, 11, 11, 11, 12, 13, 13, 14, 14, 14, 15, 15, 15, 16, 17, 17, 18, 18, 18, 19, 19, 19, 20, 21, 21, 21, 22, 23, 23, 24, 24, 24, 25, 25, 25, 26, 27, ...
[ "nonn" ]
A153985
[ 1, 1, 4, 10, 45, 327, 2795, 37386, 708255, 18674478, 714577926, 38756649867, 2991760323799, 329930606705391, 51795338953514296, 11590318613952416000, 3.697221054959107e+21, 1.6805949671026793e+24 ]
[ "nonn" ]
A303016
[ 1, 2, 2, 4, 8, 4, 8, 20, 25, 8, 16, 52, 68, 81, 16, 32, 136, 187, 308, 264, 32, 64, 360, 579, 1047, 1320, 857, 64, 128, 960, 1797, 4237, 5299, 5220, 2785, 128, 256, 2576, 5571, 18513, 27719, 24030, 22652, 9050, 256, 512, 694...
[ "nonn", "tabl" ]
A374150
[ 3, 5, 17, 67, 241, 739, 2063, 5441, 13693, 34351, 83617, 198479, 465337, 1076401, 2461873, 5582917, 12548171, 28018649, 62133769, 137034913, 300736621, 656953343, 1429360349, 3098240417, 6692967079, 14414137427, 30952936639, 66293412113, 141636592337, 301924...
[ "nonn" ]
A217342
[ 0, 38, 2389, 120908, 5756974, 267947653, 12350550690, 566789163488, 25958450760849, 1187754678765443, 54322924296499640, 2483989094275943400, 113572728843260660000, 5.192525516036292e+21, 2.3739628673649192e+23 ]
[ "nonn" ]
A275444
[ 1, 1, 2, 2, 2, 3, 4, 3, 10, 6, 14, 4, 6, 26, 12, 11, 34, 36, 11, 62, 68, 8, 20, 82, 140, 32, 20, 144, 228, 112, 37, 186, 424, 264, 16, 37, 316, 664, 608, 80, 68, 404, 1176, 1168, 320, 68, 676, 1784, 2312, 896, 32, ...
[ "nonn", "tabf" ]
A283890
[ 10, 10002, 10003, 10004, 10005, 14, 10006, 10007, 10008, 10009, 18, 10010, 10011, 10012, 10013, 22, 10014, 10015, 10016, 10017, 26, 10018, 10019, 10020, 10021, 30, 10022, 10023, 10024, 10025, 34, 10026, 10027, 10028, 37, 10030, 10030, 39 ]
[ "nonn", "look" ]
A215294
[ 1, 3, 6, 30, 70, 420, 1050, 6930, 18018, 126126, 336336, 2450448, 6651216, 49884120, 137181330, 1051723530, 2921454250, 22787343150, 63804560820, 504636071940, 1422156202740, 11377249621920, 32235540595440, 260363981732400 ]
[ "nonn" ]
A162419
[ 1, 3, 16, 35, 36, 48, 64, 195, 169, 108, 144, 560, 196, 192, 576, 899, 324, 507, 400, 1260, 1024, 432, 576, 3120, 961, 588, 1600, 2240, 900, 1728, 1024, 3843, 2304, 972, 2304, 5915, 1444, 1200, 3136, 7020, 1764, 3072, 1936, 5040, ...
[ "nonn", "mult" ]
A364973
[ 1, 1, 4, 26, 217, 2110, 22744, 264057, 3242395, 41596252, 552733376, 7559811021, 105919629403, 1514674166755, 22043665219240, 325734154669786, 4877954835706120, 73914684068584450, 1131820243084746600, 17494508772311054000, 272708269111411150000, 4.2837027180457e+21 ]
[ "nonn" ]
A265193
[ 1, 5, 17, 42, 155, 511, 2023, 7760, 31395, 127575, 526459, 2194344, 9206121, 38933281, 165380299, 706470350, 3028761985, 13037475319, 56289258695, 243772244956, 1058354286379, 4606025822849, 20087808189187, 87780004451864 ]
[ "nonn" ]
A228397
[ 1, 2, 6, 24, 118, 534, 1851, 5158, 12264, 25943, 50214, 90656, 154758, 252304, 395793, 600894, 886936, 1277433, 1800644, 2490168, 3385574, 4533066, 5986183, 7806534, 10064568, 12840379, 16224546, 20319008, 25237974, 31108868, 38073309, 46288126, 559264...
[ "nonn", "easy" ]
A107475
[ 1, 1, 2, 3, 5, 12, 42, 191, 933, 4680, 23575, 118989, 600666, 3032680, 15311545, 77306765, 390314982, 1970668439, 9949740765, 50235420192, 253634480330, 1280579531127, 6465540187905, 32643977982772, 164816746432131 ]
[ "nonn", "easy" ]
A321985
[ 3, 5, 15, 25, 205, 715, 1095, 1315, 1615, 2055, 2405, 2925, 3755, 4615, 4795, 5015, 5055, 5475, 6785, 7855, 8115, 8175, 9425, 9475, 10415, 10845, 11025, 11245, 12335, 12765, 15225, 16225, 16395, 16405, 18145, 18175, 18275, 21345, 21915, 2...
[ "nonn" ]
A125427
[ 1, 15, 169, 1695, 19097, 219115, 2540413, 29568547, 344726553, 4021721265, 46932054649, 547742536301, 6392983509989, 74617206197211, 870919028712223, 10165247714847776, 118647535970217260, 1384840366115001600 ]
[ "nonn", "base" ]
A003441
[ 1, 1, 3, 10, 30, 99, 335, 1144, 3978, 14000, 49742, 178296, 643856, 2340135, 8554275, 31429068, 115997970, 429874830, 1598952498, 5967382200, 22338765540, 83859016956, 315614844558, 1190680751376, 4501802224520, 17055399281284 ]
[ "nonn" ]
A119572
[ 3, 7, 73, 16513, 1073774593, 4611686020574872000, 8.507059173023462e+37, 2.894802230932905e+76 ]
[ "nonn" ]
A014819
[ 1, 8, 32, 88, 195, 377, 666, 1096, 1701, 2530, 3630, 5056, 6863, 9115, 11884, 15240, 19249, 24012, 29606, 36126, 43665, 52327, 62220, 73452, 86137, 100398, 116364, 134158, 153915, 175789, 199908, 226432, 255501, 287288, 321958, 359672, 400599, ...
[ "nonn" ]
A132951
[ 1, 3, 1, -1, -3, -1, 1, 3, 1, -1, -3, -1, 1, 3, 1, -1, -3, -1, 1, 3, 1, -1, -3, -1, 1, 3, 1, -1, -3, -1, 1, 3, 1, -1, -3, -1, 1, 3, 1, -1, -3, -1, 1, 3, 1, -1, -3, -1, 1, 3, 1, -1, -3, -1, 1, 3, 1, -1, ...
[ "sign", "easy", "less" ]
A113514
[ 1, 2, 5, 7, 17, 12, 9, 8, 9, 24, 11, 113, 55, 19, 22, 60, 40, 38, 42, 73 ]
[ "base", "nonn", "more" ]
A088209
[ 1, 3, 7, 14, 28, 53, 99, 181, 327, 584, 1034, 1817, 3173, 5511, 9527, 16402, 28136, 48109, 82023, 139481, 236631, 400588, 676822, 1141489, 1921993, 3231243, 5424679, 9095126, 15230452, 25475429, 42566379, 71052157, 118489383 ]
[ "frac", "nonn" ]
A279812
[ 440, 568, 2368, 2420, 5240, 5848, 10040, 11128, 12464, 12736, 21488, 21712, 24570, 29190, 34592, 36832, 126040, 133856, 133984, 134190, 139230, 142290, 152168, 159500, 175266, 177460, 200970, 244530, 244736, 246304, 248310, 279630, 283328, 284620, ...
[ "nonn" ]
A222042
[ 2, 4, 8, 15, 27, 47, 80, 134, 222, 365, 596, 970, 1575, 2554, 4138, 6701, 10848, 17558, 28415, 45982, 74406, 120397, 194812, 315218, 510039, 825266, 1335314, 2160589, 3495912, 5656510, 9152431, 14808950, 23961390, 38770349, 62731748, 101502106 ]
[ "nonn" ]
A364900
[ 1, 1, 3, 2, 5, 3, 7, 1, 1, 5, 11, 6, 13, 7, 15, 2, 17, 1, 19, 10, 21, 11, 23, 3, 1, 13, 3, 14, 29, 15, 31, 1, 33, 17, 35, 2, 37, 19, 39, 5, 41, 21, 43, 22, 5, 23, 47, 6, 1, 1, 51, 26, 53, 3, 55, 7, 57, ...
[ "nonn", "easy" ]
A202002
[ 1, 81, 101, 1357, 7463, 80065, 490879, 3697331, 28156261, 240962805, 1907124597, 16026836953, 133898693111, 1130246507329, 9448228560881, 79776887571979, 675881669398761, 5767799951404371, 49328839761741990, 423380827767076400 ]
[ "nonn" ]
A142873
[ 1, 3, 12, 48, 210, 947, 4510, 22406, 116506 ]
[ "nonn" ]
A343035
[ 1, 2, 5, 4, 11, 30, 17, 8, 25, 110, 23, 60, 31, 238, 385, 16, 41, 150, 47, 220, 935, 506, 59, 120, 121, 806, 125, 476, 67, 2310, 73, 32, 1495, 1394, 2431, 900, 83, 1786, 2635, 440, 97, 39270, 103, 1012, 1925, 2714, 109, 24...
[ "nonn" ]
A129838
[ 1, 1, 1, 2, 2, 3, 5, 6, 8, 11, 18, 21, 30, 38, 52, 78, 97, 128, 170, 222, 285, 421, 510, 683, 872, 1148, 1440, 1893, 2576, 3209, 4151, 5313, 6784, 8615, 10969, 13755, 18573, 22713, 29173, 36536, 46705, 57899, 73696, 91076, 11477...
[ "easy", "nonn" ]
A388788
[ 1, 1, 1, 1, 2, 2, 1, 3, 5, 6, 1, 4, 9, 17, 24, 1, 5, 14, 34, 74, 120, 1, 6, 20, 58, 159, 394, 720, 1, 7, 27, 90, 289, 893, 2484, 5040, 1, 8, 35, 131, 475, 1702, 5872, 18108, 40320, 1, 9, 44, 182, 729, 2921, 11619, ...
[ "nonn", "tabl" ]
A344171
[ 2, 6, 8, 3, 2, 8, 1, 5, 7, 2, 9, 9, 9, 7, 4, 7, 6, 3, 5, 6, 9, 1, 0, 0, 8, 4, 0, 2, 4, 7, 7, 5, 3, 1, 4, 8, 2, 5, 2, 8, 7, 4, 2, 0, 3, 1, 5, 3, 3, 8, 3, 0, 8, 6, 9, 1, 2, 5, 0, 7, 6, 6, 9, 4...
[ "nonn", "cons" ]
A261554
[ 1, 1, 2, 1, 2, 1, 3, 2, 4, 3, 1, 5, 4, 1, 6, 5, 2, 8, 7, 3, 10, 9, 5, 1, 12, 11, 6, 1, 15, 14, 9, 2, 18, 17, 11, 3, 22, 21, 15, 5, 27, 26, 19, 7, 1, 32, 31, 24, 10, 1, 38, 37, 29, 13, 2, 46, 45, 37, 1...
[ "nonn", "tabf" ]
A303559
[ 1, 1, 4, 27, 236, 2405, 27322, 341359, 4714996, 72864319, 1265303986, 24429044332, 514629734620, 11658131151120, 282702829140564, 7356326626391035, 205875441726381570, 6178380749014085000, 197325821666554800000, 6.653680184371366e+21, 2.3565364161505576e+23, 8.7490405447779...
[ "nonn" ]
A287734
[ 1, 1, 0, 1, 10, 0, 0, 11, 0, 1000, 100, 0, 1, 10, 10001, 1001, 0, 10000011, 100, 100000, 1000001, 110000010, 1001100, 110000, 100000000, 11010000000, 1000000, 1011100, 11001000000, 101000001, 0, 0, 1000000011000, 1000011110011000, 1100000000111, ...
[ "nonn", "easy" ]
A259729
[ 0, 9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99, 108, 126, 144, 162, 180, 189, 198, 207, 216, 225, 234, 243, 252, 261, 270, 279, 297, 306, 324, 342, 360, 369, 378, 387, 396, 405, 414, 423, 432, 441, 450, 459, 477, 495, 504, 5...
[ "nonn", "base" ]
A103274
[ 0, 0, 0, 1, 2, 2, 4, 2, 3, 4, 2, 4, 5, 4, 4, 5, 3, 3, 5, 4, 4, 5, 4, 7, 6, 6, 5, 6, 6, 8, 6, 6, 8, 5, 8, 6, 6, 9, 5, 9, 7, 6, 6, 7, 10, 7, 8, 8, 6, 9, 12, 10, 7, 7, 11, 8, 10, 8, 11, 12, 9, 10, ...
[ "nonn" ]
A328586
[ 6, 18, 36, 48, 66, 78, 96, 108, 126, 138, 156, 168, 186, 198, 222, 234, 252, 264, 282, 294, 312, 324, 342, 354, 372, 384, 402, 414, 426, 438, 456, 468, 486, 498, 516, 528, 546, 558, 576, 588, 606, 618, 642, 654, 672, 684, 70...
[ "nonn" ]
A207248
[ 2, 16, 102, 940, 9072, 101036, 1231650, 16436824, 237255370, 3684061372, 61152471648, 1079792961548, 20191392448058, 398344602963240, 8263930584283206, 179759826117751520, 4089350929606635000 ]
[ "nonn" ]
A027355
[ 1, 0, 0, 1, 1, 1, 1, 0, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 0, 0, 0, 0, 0, 2, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 0, 0, 0, 0, 0, 0, 0, 2, 1, 1, 1, 1, 1, 1, 1, 1...
[ "nonn", "tabl" ]