id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A041485
[ 1, 10, 11, 32, 107, 460, 1487, 3434, 4921, 52644, 1689529, 16947934, 18637463, 54222860, 181306043, 779447032, 2519647139, 5818741310, 8338388449, 89202625800, 2862822414049, 28717426766290, 31580249180339, 91877925126968, 307214024561243, 1320734023371940 ]
[ "nonn", "frac", "easy" ]
A064313
[ 0, 0, 1, 1, 2, 3, 4, 6, 7, 9, 11, 13, 15, 17, 20, 22, 25, 28, 31, 34, 38, 41, 45, 49, 53, 57, 62, 66, 71, 76, 81, 86, 91, 97, 102, 108, 114, 120, 127, 133, 140, 146, 153, 160, 168, 175, 183, 190, 198, 206, 214, 223, 231, 240, 249, 258, 267, 276, 286, 295, 305, 315 ]
[ "nonn" ]
A384662
[ 4, 6, 8, 14, 19, 23, 25, 28, 30, 32, 37, 39, 41, 44, 49, 52, 55, 60, 64, 67, 73, 78, 82, 84, 87, 89, 94, 99, 103, 106, 110, 113, 115, 118, 122, 124, 129, 131, 135, 138, 140, 142, 148, 150, 153, 158, 160, 165, 167, 169, 171, 174, 178, 181, 183, 186, 190, 193 ]
[ "nonn" ]
A296991
[ 1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 21, 24, 27, 32, 36, 40, 42, 48, 54, 64, 72, 81, 84, 96, 108, 120, 128, 135, 144, 162, 168, 189, 192, 216, 243, 256, 270, 280, 288, 324, 336, 360, 378, 384, 432, 448, 486, 512, 540, 576, 640, 648, 672, 729, 756, 768, 828, 840, 864 ]
[ "nonn" ]
A168933
[ 1, 16, 240, 3600, 54000, 810000, 12150000, 182250000, 2733750000, 41006250000, 615093750000, 9226406250000, 138396093750000, 2075941406250000, 31139121093750000, 467086816406250000, 7006302246093750000 ]
[ "nonn" ]
A094200
[ 3, 107, 699, 2547, 6803, 15003, 29067, 51299, 84387, 131403, 195803, 281427, 392499, 533627, 709803, 926403, 1189187, 1504299, 1878267, 2318003, 2830803, 3424347, 4106699, 4886307, 5772003, 6773003, 7898907, 9159699, 10565747 ]
[ "nonn", "easy" ]
A085673
[ 6, 0, 9, 0, 3, 6, 2, 3, 7, 5, 4, 6, 2, 0, 0, 2, 9, 3, 6, 7, 1, 5, 4, 7, 6, 6, 6, 9, 5, 0, 6, 9, 2, 8, 2, 8, 3, 5, 0, 4, 0, 4, 9, 2, 6, 7, 1, 9, 0, 8, 9, 7, 5, 0, 9, 1, 1, 1, 0, 6, 8, 3, 2, 2, 4, 3, 8, 6, 6, 5, 6, 5, 3, 8, 3, 7, 3, 6, 7, 7, 0, 4, 4, 5, 6, 0, 7, 9, 1, 2, 5, 0, 0, 1, 7, 7, 2, 7, 1 ]
[ "cons", "nonn" ]
A065299
[ 1, 2, 4, 9, 121, 242, 529, 1058, 2209, 3481, 4418, 5041, 6889, 6962, 10082, 11449, 13778, 17161, 22898, 27889, 32041, 34322, 51529, 55778, 57121, 64082, 96721, 103058, 114242, 120409, 128881, 146689, 175561, 185761, 193442, 196249, 218089 ]
[ "nonn" ]
A224611
[ 902, 145, 771, 1060, 3569, 520, 938, 294, 2457, 3911, 1650, 483, 8604, 3450, 2345, 548, 25004, 1635, 5767, 14519, 2518, 6394, 198, 7961, 4272, 8370, 4146, 654, 4489, 6987, 222, 5426, 5250, 17670, 7691, 360, 3994, 20821, 9008, 6525, 9204, 1464, 6111, 6625, 11229, 3315, 62340, 735, 6962, 5236 ]
[ "nonn" ]
A179226
[ 1927639, 48828, 2069, 735, 664, 118, 46, 36, 19, 15, 11, 12, 27, 169, 57, 100, 279841 ]
[ "nonn" ]
A275478
[ 0, 0, 1, 3, 0, 1, 0, 1, 4, 2, 0, 3, 0, 0, 7, 5, 0, 1, 0, 3, 0, 1, 0, 4, 7, 0, 3, 2, 0, 8, 0, 6, 0, 0, 2, 6, 0, 0, 0, 1, 0, 7, 0, 0, 23, 3, 0, 5, 0, 1, 2, 3, 0, 1, 0, 5, 0, 1, 0, 9, 0, 2, 9, 7, 0, 2, 0, 2, 0, 3, 0, 7, 0, 2, 0, 3, 0, 5, 0, 5, 178, 1, 0, 8, 0, 0, 0, 4, 0, 24, 1, 2, 0, 0, 0, 6, 0, 0, 20, 9 ]
[ "nonn" ]
A214052
[ 1, 2, 1, 4, 1, 6, 1, 2, 1, 1, 1, 5, 1, 2, 1, 1, 1, 18, 1, 6, 1, 22, 1, 24, 1, 26, 1, 1, 1, 4, 1, 32, 1, 34, 1, 2, 1, 2, 1, 1, 1, 42, 1, 2, 1, 1, 1, 48, 1, 2, 1, 1, 1, 4, 1, 1, 1, 2, 1, 5, 1, 2, 1, 1, 1, 66, 1, 2, 1, 70, 1, 72, 1, 2, 1, 1, 1, 2, 1, 2, 1, 82, 1 ]
[ "nonn" ]
A359573
[ 1, 1, 1, 1, 3, 1, 1, 8, 8, 1, 1, 20, 45, 20, 1, 1, 49, 234, 234, 49, 1, 1, 119, 1193, 2423, 1193, 119, 1, 1, 288, 6049, 24455, 24455, 6049, 288, 1, 1, 696, 30616, 245972, 482443, 245972, 30616, 696, 1, 1, 1681, 154861, 2473317, 9469361, 9469361, 2473317, 154861, 1681, 1 ]
[ "nonn", "tabl" ]
A104711
[ 1, 2, 1, 3, 4, 1, 4, 10, 7, 1, 5, 20, 27, 11, 1, 6, 35, 77, 61, 16, 1, 7, 56, 182, 236, 121, 22, 1, 8, 84, 378, 726, 611, 218, 29, 1, 9, 120, 714, 1902, 2375, 1394, 365, 37, 1, 10, 165, 1254, 4422, 7667, 6686, 2885, 577, 46, 1, 11, 220, 2079, 9372, 21527, 26090, 16745 ]
[ "nonn", "tabl" ]
A378750
[ 1, -3, -3, 4, -5, 9, -5, 0, 8, 15, -11, -8, -11, 15, 17, 8, -17, -24, -17, -16, 21, 33, -19, 0, 12, 33, 24, -8, -29, -51, -27, 24, 35, 51, 31, 56, -35, 51, 39, 0, -41, -63, -41, -40, -28, 57, -43, 0, 32, -36, 53, -32, -49, -72, 57, 0, 57, 87, -59, 48, -57, 81, -4, 88, 61, -105, -65, -64, 67, -93, -71, 0, -69, 105 ]
[ "sign" ]
A010605
[ 3, 2, 3, 9, 6, 1, 1, 8, 0, 1, 2, 7, 7, 4, 8, 3, 3, 8, 4, 0, 7, 1, 4, 6, 9, 9, 2, 4, 2, 7, 2, 0, 2, 9, 7, 0, 0, 3, 7, 8, 3, 7, 8, 9, 6, 8, 5, 2, 6, 5, 2, 8, 8, 1, 6, 5, 1, 5, 1, 2, 5, 7, 6, 2, 1, 2, 4, 6, 8, 2, 6, 5, 3, 2, 2, 8, 5, 8, 2, 1, 9, 6, 3, 9, 7, 2, 1, 9, 5, 8, 0, 8, 3, 4, 2, 6, 7, 5, 9 ]
[ "nonn", "cons" ]
A005903
[ 1, 32, 122, 272, 482, 752, 1082, 1472, 1922, 2432, 3002, 3632, 4322, 5072, 5882, 6752, 7682, 8672, 9722, 10832, 12002, 13232, 14522, 15872, 17282, 18752, 20282, 21872, 23522, 25232, 27002, 28832, 30722, 32672, 34682, 36752, 38882, 41072, 43322, 45632, 48002 ]
[ "nonn", "easy", "changed" ]
A340006
[ 0, 0, 0, 0, 1, 0, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 0, 2, 0, 1, 3, 1, 1, 0, 1, 0, 1, 0, 0, 0, 0, 0, 2, 0, 0, 0, 1, 1, 0, 1, 0, 1, 0, 0, 3, 1, 0, 1, 1, 0, 2, 1, 1, 0, 0, 0, 1, 0, 2, 2, 1, 1, 2, 1, 0, 1, 0, 0, 0, 0, 2, 1, 0, 1, 0, 0, 0, 0, 0, 1, 1, 1, 2 ]
[ "nonn" ]
A185684
[ 13, 23, 233, 2333, 23333, 0, 43, 433, 53, 0, 73, 733, 7333, 83, 0, 103, 1033, 10333, 103333, 113, 0, 0, 0, 0, 163, 173, 1733, 17333, 0, 193, 1933, 19333, 0, 0, 223, 233, 2333, 23333, 0, 0, 263, 2633, 0, 283, 2833, 293, 0, 313, 0, 0, 0, 353, 3533, 0, 373, 3733, 383, 3833, 38333 ]
[ "nonn", "base", "less", "tabf" ]
A148229
[ 1, 1, 2, 4, 13, 33, 118, 347, 1341, 4318, 17545, 59856, 251495, 896183, 3859528, 14217556, 62388697, 235860592, 1050383993, 4055229753, 18275493427, 71790138056, 326702931541, 1302162074045, 5974359609738, 24109258946617, 111379884904233, 454295827860432, 2111201191123406, 8691686866081354 ]
[ "nonn", "walk" ]
A328549
[ 1, 2, 6, 12, 60, 120, 360, 2520, 5040, 55440, 720720, 1441440 ]
[ "nonn", "fini", "full" ]
A251876
[ 1038, 2146, 2146, 3092, 5632, 3092, 5756, 7160, 7160, 5756, 11008, 15116, 7080, 15116, 11008, 18400, 36852, 9936, 9936, 36852, 18400, 32372, 41816, 18464, 13152, 18464, 41816, 32372, 60292, 99808, 31296, 31520, 31520, 31296, 99808, 60292 ]
[ "nonn", "tabl" ]
A071305
[ 1, 8, 144, 27648, 37324800, 300987187200, 13311459341107200, 3.6803522786293187e+21, 6.233449457837263e+27, 6.307732228336419e+34, 3.794639489522011e+42, 1.374795579913015e+51 ]
[ "nonn" ]
A364197
[ 0, 1, 1, 2, 2, 1, 3, 3, 2, 3, 1, 4, 2, 3, 3, 2, 5, 4, 2, 4, 3, 5, 3, 4, 4, 3, 6, 2, 5, 3, 4, 4, 3, 5, 3, 4, 5, 5, 3, 4, 5, 3, 4, 7, 4, 6, 4, 5, 4, 4, 6, 4, 5, 3, 5, 4, 5, 5, 4, 5, 4, 5, 6, 7, 4, 5, 6, 5, 5, 8, 2, 7, 4, 6, 6, 4, 6, 6, 4, 7, 5, 5, 6, 5, 5, 6, 5, 6, 5, 8, 4, 7, 5, 6, 6, 5, 3, 7, 5, 7 ]
[ "nonn" ]
A361094
[ 1, 1, 9, 166, 4717, 182136, 8911549, 528571408, 36864033945, 2956595372416, 268116203622961, 27128338649300736, 3029974270053624000, 370289278173654100000, 4.915011675713681e+22, 7.041536364582774e+24, 1.0830041220245202e+27 ]
[ "nonn" ]
A177552
[ 1, 1, 2, 6, 24, 120, 720, 5020, 40000, 358560, 3571200, 39124800, 467596800, 6054250840, 84417778720, 1261161277200, 20097223449600, 340275330912000, 6100262355686400, 115437689217984140, 2299445555596422000, 48093671993708350000, 1.0537949896654426e+21 ]
[ "nonn" ]
A238662
[ 0, 0, 0, 0, 0, 1, 1, 3, 5, 9, 12, 20, 29, 43, 62, 88, 118, 169, 223, 306, 403, 532, 693, 907, 1160, 1490, 1910, 2423, 3044, 3845, 4783, 5957, 7401, 9104, 11209, 13805, 16806, 20449, 24920, 30223, 36494, 44022, 52880, 63511, 76003, 90631, 108088, 128708 ]
[ "nonn" ]
A329618
[ 1, 1, 1, 2, 1, 2, 1, 1, 2, 2, 1, 1, 1, 2, 2, 4, 1, 1, 1, 1, 2, 2, 1, 4, 2, 2, 1, 1, 1, 3, 1, 1, 2, 2, 2, 4, 1, 2, 2, 2, 1, 1, 1, 1, 3, 2, 1, 1, 2, 3, 2, 1, 1, 4, 2, 4, 2, 2, 1, 2, 1, 2, 3, 2, 2, 3, 1, 1, 2, 1, 1, 1, 1, 2, 1, 1, 2, 3, 1, 1, 4, 2, 1, 4, 2, 2, 2, 4, 1, 4, 2, 1, 2, 2, 2, 2, 1, 1, 3, 4, 1, 3, 1, 4, 1 ]
[ "nonn" ]
A344035
[ 1252, 1376, 1461, 1522, 1548, 1585, 1590, 1646, 1702, 1709, 1737, 1739, 1772, 1798, 1802, 1810, 1864, 1889, 1954, 1987, 2006, 2033, 2081, 2096, 2152, 2160, 2225, 2241, 2251, 2276, 2313, 2322, 2339, 2341, 2367, 2374, 2377, 2416, 2423, 2456, 2458, 2465, 2467, 2512, 2521, 2528, 2530, 2537, 2540, 2549, 2556, 2582 ]
[ "nonn" ]
A230000
[ 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 2, 0, 1, 0, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 2, 1, 2, 0, 2, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 2, 1, 2, 1, 3, 1, 2, 1, 2, 2, 1, 2, 1 ]
[ "nonn", "tabf" ]
A254137
[ 1, 52, 629, 59432, 725289, 68583900, 836982301, 79145760592, 965876849489, 91334139138692, 1114621047327429, 105399517420289400, 1286271722739003000, 121630951768874830000, 1.484356453419762e+21, 1.4036201294176414e+23, 1.7129460609746828e+24 ]
[ "nonn", "easy" ]
A337839
[ 4, 16, 81, 88, 144, 250, 520, 900, 1008, 1053, 1134, 2025, 2304, 2655, 3726, 4680, 6408, 6624, 9928, 12024, 12150, 12510, 13608, 14256, 15480, 16408, 17128, 17172, 18304, 19152, 19288, 19602, 23310, 24336, 25110, 26550, 29358, 32896, 32968, 36864, 37485, 38592 ]
[ "nonn", "base" ]
A077025
[ 0, 1, 3, 4, 7, 9, 11, 14, 17, 19, 23, 25, 28, 32, 36, 37, 41, 46, 48, 52, 56, 58, 64, 66, 70, 74, 78, 82, 86, 90, 92, 97, 103, 105, 111, 114, 116, 122, 128, 130, 135, 139, 143, 147, 153, 157, 161, 165, 168, 175, 179, 181, 189, 193, 197, 201, 205, 209, 215, 221, 224 ]
[ "nonn" ]
A354306
[ 1, 2, 7, 62, 459, 4040, 35386, 321639, 2958100, 27585931, 259670736 ]
[ "nonn", "hard", "more" ]
A257398
[ 1, 1, 1, 2, 2, 3, 0, 1, 2, 0, 2, 0, 3, 2, 2, 3, 0, 2, 2, 2, 0, 0, 1, 0, 2, 2, 1, 4, 2, 4, 0, 0, 2, 0, 4, 1, 0, 0, 4, 2, 1, 0, 2, 2, 0, 0, 0, 2, 2, 4, 2, 1, 2, 4, 2, 2, 0, 1, 0, 0, 4, 0, 2, 4, 0, 0, 0, 2, 0, 2, 3, 0, 0, 2, 2, 2, 2, 3, 2, 0, 4, 0, 4, 2, 2, 0, 0 ]
[ "nonn" ]
A253142
[ 2, 4, 8, 14, 16, 22, 26, 32, 38, 44, 46, 52, 64, 68, 86, 88, 98, 124, 134, 158, 178, 184, 196, 212, 236, 242, 248, 256, 262, 296, 298, 316, 322, 338, 364, 374, 386, 394, 452, 472, 484, 488, 548, 578, 586, 598, 602, 626, 632, 638, 646, 658, 662, 676, 694, 718, 728, 736, 794, 806, 842, 848, 862 ]
[ "nonn" ]
A269024
[ 0, 1, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5 ]
[ "nonn" ]
A236370
[ 1, 9, 34, 81, 163, 282, 454, 678, 973, 1335, 1786, 2319, 2959, 3696, 4558, 5532, 6649, 7893, 9298, 10845, 12571, 14454, 16534, 18786, 21253, 23907, 26794, 29883, 33223, 36780, 40606, 44664, 49009, 53601, 58498, 63657, 69139, 74898, 80998, 87390, 94141 ]
[ "nonn", "easy" ]
A215378
[ 2, 3, 11, 13, 23, 47, 67, 79, 89, 101, 113, 157, 167, 179, 199, 211, 223, 233, 277, 311, 331, 353, 397, 409, 419, 421, 431, 443, 463, 487, 509, 541, 563, 607, 617, 619, 641, 661, 673, 683, 727, 739, 751, 761, 773, 827, 839, 859, 881, 883, 937, 947, 971 ]
[ "nonn", "easy" ]
A268891
[ 0, 744, 12252, 236960, 3596174, 55491832, 800733668, 11458879568, 159796058742, 2205638713335, 30049236232518, 406011322471540, 5441799029248756, 72482603197808510, 960023683579703200, 12655255863840772000 ]
[ "nonn" ]
A121021
[ 0, 0, 0, 0, 0, 1, 1, 5, 3, 3080, 5679 ]
[ "nonn", "more" ]
A336388
[ 0, 0, 0, 0, 0, 2, 0, 0, 0, 1, 0, 1, 0, 1, 1, 0, 0, 1, 0, 1, 0, 1, 0, 2, 0, 1, 0, 2, 0, 2, 0, 0, 1, 1, 0, 0, 0, 1, 0, 2, 0, 2, 0, 1, 1, 1, 0, 1, 0, 0, 1, 1, 0, 2, 0, 1, 0, 1, 0, 2, 0, 1, 0, 0, 0, 2, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 0, 2, 0, 1, 0, 1, 0, 2, 0, 1, 1, 1, 0, 2, 1, 1, 0, 1, 1, 2, 0, 0, 1, 0, 0, 2, 0, 1, 1 ]
[ "nonn" ]
A353166
[ 1, 2, 7, 36, 237, 1926, 18147, 195432, 2353881, 31392522, 459730431, 7306628652, 125360110917, 2306819281806, 45287505051867, 944784879298416, 20866852729885616, 486315480759519740, 11921919558334284000, 306644867097382160000, 8.255584865932073e+21 ]
[ "nonn" ]
A173647
[ 17, 173, 173245471460063, 1732454714600633 ]
[ "nonn", "base" ]
A349042
[ 0, 1, 1, 1, 3, 1, 4, 1, 5, 0, 1, 2, 6, 1, 2, 7, 2, 1, 1, 1, 2, 10, 4, 1, 2, 2, 11, 6, 1, 2, 1, 2, 2, 13, 9, 1, 2, 1, 2, 2, 15, 12, 1, 2, 1, 2, 1, 0, 1, 3, 19, 14, 2, 2, 1, 2, 3, 20, 17, 3, 2, 1, 2, 1, 0, 1, 1, 1, 4, 25, 19, 4, 4, 1, 2, 1, 0, 1, 1, 5, 29, 20, 4, 6, 2, 3, 1, 0, 1, 1, 1 ]
[ "nonn", "tabf" ]
A245487
[ 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 3, 3, 0, 4, 6, 4, 5, 10, 10, 11, 15, 20, 22, 27, 35, 43, 49, 63, 79, 92, 112, 144, 171, 204, 257, 316, 375, 462, 573, 692, 838, 1035, 1265, 1532, 1873, 2300, 2798, 3406, 4173, 5099, 6204, 7580, 9273, 11303, 13784, 16855, 20576 ]
[ "nonn", "easy" ]
A208143
[ 8, 64, 240, 900, 2400, 6400, 14000, 30625, 58800, 112896, 197568, 345744, 564480, 921600, 1425600, 2205225, 3267000, 4840000, 6921200, 9897316, 13741728, 19079424, 25836720, 34987225, 46373600, 61465600, 79968000, 104040000 ]
[ "nonn" ]
A260656
[ 1, 2, 18, 396, 104940, 10808820, 160327227060, 486432806900040, 72152091814676030000, 1.0595224428990372e+26, 1.6973052619216856e+33, 1.080048582626835e+41, 2.664488248558035e+50 ]
[ "nonn" ]
A193861
[ 1, 5, 1, 19, 7, 1, 65, 33, 9, 1, 211, 131, 51, 11, 1, 665, 473, 233, 73, 13, 1, 2059, 1611, 939, 379, 99, 15, 1, 6305, 5281, 3489, 1697, 577, 129, 17, 1, 19171, 16867, 12259, 6883, 2851, 835, 163, 19, 1, 58025, 52905, 41385, 26025, 12585, 4521, 1161 ]
[ "nonn", "tabl" ]
A390188
[ 125, 243, 343, 1331, 2187, 2197, 4913, 6859, 12167, 16807, 24389, 29791, 50653, 68921, 78125, 79507, 103823, 148877, 161051, 177147, 205379, 226981, 300763, 357911, 371293, 389017, 493039, 571787, 704969, 912673, 1030301, 1092727, 1225043, 1295029, 1419857, 1442897 ]
[ "nonn" ]
A153942
[ 1, 2, 4, 15, 38, 236, 1250, 13966, 128542, 2461620, 40144584, 1355506385, 38359079886, 2280018933124, 113583264552803, 11849601571255760, 1037356176207581600, 189822553366119020000 ]
[ "nonn" ]
A013040
[ 2, 18, 938, 122066, 29635154, 11561687346, 6615385296570, 5218960553242866, 5429404407724398000, 7.201623832416658e+21, 1.1862352305394237e+25, 2.375579542703894e+28 ]
[ "nonn" ]
A095098
[ 6, 9, 14, 19, 22, 27, 30, 35, 40, 43, 48, 53, 56, 61, 64, 69, 74, 77, 82, 85, 90, 95, 98, 103, 108, 111, 116, 119, 124, 129, 132, 137, 142, 145, 150, 153, 158, 163, 166, 171, 174, 179, 184, 187, 192, 197, 200, 205, 208, 213, 218, 221, 226, 229, 234, 239, 242 ]
[ "nonn", "base" ]
A209555
[ 1, 1, 1, 2, 2, 1, 2, 5, 3, 1, 3, 6, 9, 4, 1, 3, 11, 13, 14, 5, 1, 4, 12, 28, 24, 20, 6, 1, 4, 19, 34, 59, 40, 27, 7, 1, 5, 20, 62, 80, 110, 62, 35, 8, 1, 5, 29, 70, 164, 166, 188, 91, 44, 9, 1, 6, 30, 115, 200, 376, 314, 301, 128, 54, 10, 1, 6, 41, 125, 365, 496, 776 ]
[ "nonn", "tabl" ]
A250397
[ 0, 0, 0, 2, 0, 0, 0, 12, 2, 30, 0, 0, 10, 10, 0, 2, 112, 0, 0, 6, 42, 52, 2, 0, 0, 54, 16, 0, 96, 0, 0, 46, 12, 60, 0, 84, 260, 6, 22, 126, 0, 60, 112, 14, 16, 124, 136, 40, 0, 150 ]
[ "nonn" ]
A359569
[ 1, 2, 4, 14, 6562 ]
[ "nonn", "more", "hard" ]
A013656
[ 0, 7, 32, 75, 136, 215, 312, 427, 560, 711, 880, 1067, 1272, 1495, 1736, 1995, 2272, 2567, 2880, 3211, 3560, 3927, 4312, 4715, 5136, 5575, 6032, 6507, 7000, 7511, 8040, 8587, 9152, 9735, 10336, 10955, 11592, 12247, 12920, 13611, 14320, 15047, 15792, 16555 ]
[ "nonn", "easy" ]
A149877
[ 1, 2, 5, 14, 42, 140, 480, 1694, 6160, 22768, 86119, 329819, 1276827, 5009624, 19807663, 79034687, 317771172, 1284909978, 5231953571, 21409625876, 88032238475, 363768052841, 1508700015910, 6282877542186, 26257507524764, 110071406730840, 462949380985458, 1952358638292573, 8255507414702459 ]
[ "nonn", "walk" ]
A137866
[ 0, 1, 1, 2, 1, 2, 1, 2, 3, 2, 1, 2, 1, 2, 3, 4, 1, 2, 1, 2, 3, 2, 1, 2, 1, 2, 3, 4, 1, 2, 1, 2, 3, 2, 1, 2, 1, 2, 3, 4, 1, 2, 1, 2, 3, 2, 1, 2, 1, 2, 3, 4, 1, 2, 1, 2, 3, 2, 1, 2, 1, 2, 3, 4, 5, 6, 1, 2, 3, 2, 1, 2, 1, 2, 3, 4, 1, 2, 1, 2, 3, 2 ]
[ "nonn" ]
A304541
[ 8, 35, 37, 124, 461, 949, 2792, 10838, 31286, 102740, 377657, 1285470, 4523630, 16494893, 59221296, 214677488, 785520010, 2868338992, 10505555278, 38572905642, 141632778198, 520593744190, 1914834430000, 7044479831512 ]
[ "nonn" ]
A177740
[ 1, 1, 1, 1, 2, 1, 2, 1, 2, 2, 1, 2, 2, 3, 1, 2, 2, 2, 3, 1, 2, 2, 2, 3, 3, 1, 2, 2, 2, 2, 3, 3, 3, 4, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 1, 2, 2, 2, 2, 3, 2, 3, 3, 3, 3, 4, 4, 1, 2, 2, 2, 2, 3, 2, 3, 3, 3, 3, 3, 4, 3, 4, 4, 5, 1, 2, 2, 2, 2, 3, 2, 3, 2, 3, 3, 3, 3, 4, 3, 3, 4, 4, 4, 4, 5 ]
[ "easy", "nonn", "tabf" ]
A232590
[ 0, 10, 2, 26, 20, 70, 90, 210, 336, 674, 1178, 2234, 4036, 7502, 13714, 25314, 46464, 85562, 157266, 289370, 532116, 978838, 1800234, 3311282, 6090256, 11201874, 20603306, 37895546, 69700612, 128199582, 235795618, 433695938, 797691008 ]
[ "nonn" ]
A175179
[ 2, 3, 5, 11, 17, 19, 23, 29, 31, 47, 53, 67, 71, 79, 83, 89, 97, 101, 103, 107, 127, 131, 137, 139, 149, 151, 163, 167, 173, 179, 191, 199 ]
[ "nonn" ]
A001200
[ 1, 1, 1, 2, 3, 5, 10, 24, 69, 384, 5250, 232929, 28872973 ]
[ "nonn", "hard", "more", "nice" ]
A320524
[ 0, 15, 90, 630, 3780, 23220, 139320, 839160, 5034960, 30229200, 181375200, 1088367840, 6530207040, 39181942080, 235091652480, 1410554113920, 8463324683520, 50779973295360, 304679839772160, 1828079189798400, 10968475138790400, 65810851739735040, 394865110438410240, 2369190668072417300, 14215144008434504000, 85290864083258750000 ]
[ "easy", "nonn" ]
A099361
[ 2, 3, 7, 13, 29, 37, 53, 79, 89, 107, 113, 139, 151, 173, 181, 223, 239, 251, 311, 317, 349, 359, 383, 397, 421, 463, 491, 503, 541, 577, 593, 613, 619, 647, 659, 683, 743, 787, 821, 857, 863, 887, 911, 983, 997, 1033, 1061, 1151, 1163, 1193, 1213, 1249 ]
[ "nonn", "easy", "nice" ]
A309107
[ 0, 0, 0, 2, 0, 2, 2, 3, 0, 4, 0, 2, 5, 0, 3, 7, 0, 3, 3, 4, 10, 0, 5, 10, 3, 6, 0, 5, 5, 6, 4, 11, 0, 6, 4, 4, 5, 8, 0, 6, 6, 7, 26, 0, 5, 8, 8, 9, 0, 5, 5, 6, 11, 21, 0, 6, 4, 21, 4, 2, 48, 0, 7, 21, 6, 9, 18, 0, 6, 4, 11, 18, 5, 22, 0, 7, 13, 0, 3, 54, 0, 3, 3, 4, 14, 0, 5, 14, 3, 6, 21, 27, 0, 7, 18, 23, 0, 4, 14, 11 ]
[ "easy", "nonn" ]
A171974
[ 0, 1, 2, 3, 4, 4, 5, 6, 7, 8, 8, 9, 10, 11, 12, 13, 13, 14, 15, 16, 17, 17, 18, 19, 20, 21, 22, 22, 23, 24, 25, 26, 26, 27, 28, 29, 30, 31, 31, 32, 33, 34, 35, 35, 36, 37, 38, 39, 40, 40, 41, 42, 43, 44, 44, 45, 46, 47, 48, 48, 49, 50, 51, 52, 53, 53, 54, 55, 56, 57, 57, 58, 59 ]
[ "nonn" ]
A151751
[ 2, 0, 6, -44, 0, 12, 0, -220, 0, 20, 2166, 0, -660, 0, 30, 0, 15162, 0, -1540, 0, 42, -196888, 0, 60648, 0, -3080, 0, 56, 0, -1771992, 0, 181944, 0, -5544, 0, 72, 28730410, 0, -8859960, 0, 454860, 0, -9240, 0, 90 ]
[ "easy", "tabl", "sign" ]
A120325
[ 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0 ]
[ "easy", "nonn" ]
A296599
[ 1, 2, 2, 4, 11, 4, 7, 39, 39, 7, 12, 136, 228, 136, 12, 21, 494, 1441, 1441, 494, 21, 37, 1785, 9194, 16524, 9194, 1785, 37, 65, 6432, 58251, 194743, 194743, 58251, 6432, 65, 114, 23201, 370000, 2271055, 4254377, 2271055, 370000, 23201, 114, 200, 83695 ]
[ "nonn", "tabl" ]
A104379
[ 0, 1, 2, 3, 1, 11, 21, 31, 2, 12, 22, 26, 3, 13, 99, 33, 1, 101, 201, 301, 11, 111, 211, 311, 21, 121, 221, 31, 2, 102, 202, 12, 112, 212, 22, 122, 26, 264, 3, 103, 307, 13, 113, 99, 836, 33, 1, 1001, 2001, 3001, 101, 1101, 2101, 3101, 201, 1201, 2201, 301, 1301, 11, 1011 ]
[ "nonn", "base" ]
A326655
[ 1, 3, 4, 6, 9, 15, 18, 33, 138, 204, 219, 267, 1104, 1408, 1584, 1956, 17175, 21147, 24075, 27396, 27591, 40095, 354984, 400989, 916248, 1145805, 2541153, 5414673 ]
[ "nonn", "more" ]
A187454
[ 81, 5175, 1293651, 983320335, 2806943351103, 25357269654789184, 816485466267634600000 ]
[ "nonn" ]
A051717
[ 1, 2, 3, 6, 30, 30, 42, 42, 30, 30, 66, 66, 2730, 2730, 6, 6, 510, 510, 798, 798, 330, 330, 138, 138, 2730, 2730, 6, 6, 870, 870, 14322, 14322, 510, 510, 6, 6, 1919190, 1919190, 6, 6, 13530, 13530, 1806, 1806, 690, 690, 282, 282, 46410, 46410, 66, 66, 1590, 1590 ]
[ "nonn", "easy", "nice", "frac" ]
A302332
[ 1, 193, 37441, 7263361, 1409054593, 273349327681, 53028360515521, 10287228590683392, 1995669318232062700, 387149560508429500000, 7.510501906931709e+22, 1.4569986549887007e+25, 2.82650228565901e+27, 5.4832687343129804e+29, 1.0637258694338616e+32 ]
[ "nonn", "easy" ]
A185023
[ 0, 2, 1, 5, 4, 3, 3, 7, 2, 21, 6, 6, 20, 10, 5, 5, 19, 4, 9, 4, 4, 23, 18, 8, 8, 8, 3, 27, 22, 22, 17, 12, 7, 7, 7, 7, 26, 21, 21, 16, 16, 11, 11, 11, 6, 6, 6, 6, 25, 20, 20, 20, 15, 5, 15, 10, 10, 10, 10, 5, 5, 29, 5, 24, 24, 24, 19, 19, 19, 19, 14, 9, 14, 9 ]
[ "nonn" ]
A085582
[ 0, 1, 10, 44, 130, 313, 640, 1192, 2044, 3305, 5078, 7524, 10750, 14993, 20388, 27128, 35448, 45665, 57922, 72636, 89970, 110297, 133976, 161440, 192860, 228857, 269758, 316012, 367974, 426417, 491468, 564120, 644640, 733633, 831674, 939292 ]
[ "nonn" ]
A357511
[ 0, 4, 54, 2182, 36625, 3591137, 25952409, 4220121443, 206216140401, 47128096330129, 1233722785504429, 364131107601152500, 9971452750252847000, 3.6111401873897947e+21, 1.0207767037403598e+23, 2.9220634511379504e+24, 1.691406107965915e+26 ]
[ "nonn", "easy" ]
A260837
[ 364, 496, 1224, 2235, 2590, 6232, 13170, 17731, 34192, 77780, 123488, 206695, 457440, 825256, 1336836, 2725379, 5298108, 8851516, 16674798, 33192375, 58277638, 104857040, 206110260, 377809047, 671142648, 1283474236, 2413960656 ]
[ "nonn" ]
A249024
[ 1, -1, 1, 1, 1, -1, -13, 7, 7453, 6669, -114753, -123387, -7307779, 4681807, 37377631, 3949479, -309016992029, -139291594927, 1061523546157, 562200661481, 12828113969679940, -446763044161503, -17777677128738000, -3490123799181493, 7248496389957891000, 196409682891987100 ]
[ "sign", "frac" ]
A335559
[ 0, 1, 2, 10, 36, 144, 556, 2172, 8452, 32932, 128260, 499604, 1945988, 7579860, 29524324, 115000436, 447938884, 1744769748, 6796063908, 26471392948, 103108894980, 401620128916, 1564353180772, 6093322268020, 23734139269316, 92447000518484, 360090914096676 ]
[ "nonn", "easy" ]
A197758
[ 3, 7, 1, 4, 5, 8, 2, 9, 4, 0, 3, 3, 4, 8, 6, 3, 5, 2, 5, 0, 5, 8, 3, 2, 7, 2, 8, 5, 1, 9, 5, 1, 2, 4, 0, 9, 8, 0, 8, 9, 6, 8, 2, 6, 0, 7, 3, 9, 5, 7, 5, 3, 9, 0, 7, 2, 3, 4, 4, 5, 2, 9, 1, 0, 6, 3, 6, 6, 8, 0, 5, 8, 1, 2, 0, 6, 6, 9, 3, 6, 8, 8, 6, 9, 9, 1, 5, 1, 0, 5, 8, 9, 8, 3, 6, 8, 1, 2, 4 ]
[ "nonn", "cons" ]
A094374
[ 1, 3, 8, 21, 56, 153, 428, 1221, 3536, 10353, 30548, 90621, 269816, 805353, 2407868, 7207221, 21588896, 64701153, 193972388, 581655021, 1744440776, 5232273753, 15694724108, 47079978021, 141231545456, 423677859153, 1271000023028, 3812932960221, 11438664662936 ]
[ "easy", "nonn" ]
A262834
[ 2, 31, 47, 103, 173, 199, 229, 367, 409, 463, 743, 827, 911, 967, 1123, 1163, 1321, 1447, 1583, 1657, 1669, 2161, 2647, 2677, 2861, 3361, 3673, 3851, 4079, 4231, 4271, 4513, 4663, 5003, 5381, 5923, 6329, 6569, 7043, 7103, 7393, 7561, 8263, 8753, 9649, 10337 ]
[ "nonn", "easy", "base" ]
A122560
[ 7, 11, 29, 31, 43, 151, 157, 191, 263, 311, 359, 367, 563, 823, 859, 881, 929, 997, 1013, 1019, 1021, 1087, 1297, 1471, 1613, 1733, 1787, 1913, 2153, 2161, 2203, 2293, 2411, 2473, 2543, 2549, 2557, 2579, 2689, 2731, 2971, 3209, 3253, 3299, 3779, 3881, 3923 ]
[ "nonn" ]
A220521
[ 1, 2, 4, 4, 4, 4, 8, 8, 4, 4, 8, 12, 16, 12, 16, 16, 4, 4, 8, 12, 16, 20, 24, 26, 24, 12, 20, 32, 40, 28, 32, 32, 4, 4, 8, 12, 16, 20, 24, 26, 24, 20, 32, 44, 64, 52, 48, 54, 40, 12, 20, 36, 48, 56, 64, 74, 76, 30, 44, 72, 88, 60, 64, 64, 4, 4, 8, 12 ]
[ "nonn", "tabf" ]
A062288
[ 2, 5, 7, 9, 10, 15, 16, 17, 24, 26, 28, 30, 32, 35, 40, 41, 43, 49, 51, 55, 56, 60, 66, 69, 72, 76, 77, 87, 94, 98, 102, 103, 104, 108, 116, 120, 123, 124, 126, 128, 135, 137, 140, 144, 148, 154, 160, 161, 164, 166, 170, 171, 185, 190, 192, 194, 195, 201, 206, 220 ]
[ "easy", "nonn" ]
A091162
[ 1, 6, 44, 309, 2409, 19611, 166169, 1440483, 12712625, 113763849 ]
[ "nonn" ]
A238527
[ 2, 3, 3, 5, 5, 7, 2, 2, 5, 11, 2, 5, 11, 17, 7, 7, 7, 2, 11, 7, 13, 29, 11, 11, 2, 5, 17, 7, 5, 2, 19, 41, 23, 3, 11, 11, 23, 5, 2, 2, 2, 31, 7, 3, 17, 3, 23, 11, 59, 19, 5, 2, 37, 3, 41, 23, 71, 11, 2, 11, 47, 11, 29, 13, 13, 2, 31, 5, 5, 53, 17, 19, 13, 61, 23, 101, 19, 29, 41, 23, 107, 67, 11, 3, 3, 47, 73, 2, 3, 17 ]
[ "nonn" ]
A038375
[ 1, 1, 3, 5, 15, 45, 189, 661, 3357, 15745, 95095 ]
[ "nonn", "more", "hard" ]
A023967
[ 0, 0, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7 ]
[ "nonn", "base" ]
A002513
[ 1, 1, 3, 4, 9, 12, 23, 31, 54, 73, 118, 159, 246, 329, 489, 651, 940, 1242, 1751, 2298, 3177, 4142, 5630, 7293, 9776, 12584, 16659, 21320, 27922, 35532, 46092, 58342, 75039, 94503, 120615, 151173, 191611, 239060, 301086, 374026, 468342, 579408, 721638, 889287 ]
[ "nonn", "easy", "nice" ]
A020438
[ 4201, 4801, 5449, 6073, 7333, 7741, 8369, 11089, 12073, 13121, 13621, 15754, 16285, 17389, 18385, 19429, 21589, 21697, 23962, 24181, 24685, 25997, 26281, 26513, 26842, 29098, 29593, 29914, 33053, 35461, 36149, 37090, 39637, 39733, 40265, 42293, 43669 ]
[ "nonn" ]
A352849
[ 1, 3, 5, 2, 7, 9, 4, 11, 13, 6, 17, 19, 8, 15, 23, 14, 25, 27, 16, 29, 21, 10, 31, 33, 20, 37, 39, 22, 35, 41, 12, 43, 47, 18, 49, 53, 24, 55, 59, 26, 45, 61, 28, 51, 65, 32, 57, 67, 34, 63, 71, 38, 69, 73, 40, 77, 79, 30, 83, 89, 36, 85, 91, 44, 75, 97, 46, 81 ]
[ "nonn" ]
A151229
[ 1, 3, 13, 59, 273, 1291, 6189, 29891, 145249, 709331, 3476493, 17086667, 84178545, 415508571, 2054190637, 10169032019, 50397605313, 250010003619, 1241263435021, 6167119171419, 30659990460625, 152510262852267, 758988477453101, 3778818907367395, 18820920951738144, 93771668361349490 ]
[ "nonn", "walk" ]
A310338
[ 1, 4, 10, 11, 16, 20, 26, 32, 34, 36, 40, 45, 54, 58, 62, 59, 64, 72, 78, 88, 88, 88, 88, 93, 106, 108, 118, 113, 116, 120, 126, 140, 138, 144, 142, 145, 154, 156, 170, 163, 172, 174, 178, 188, 186, 196, 192, 201, 208, 208 ]
[ "nonn" ]
A092241
[ 0, 0, 0, 0, 1, 0, 1, 0, 1, 1, 0, 0, 1, 0, 0, 1, 1, 0, 2, 0, 3, 0, 2, 0, 1, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 1, 0, 3, 2, 0, 0, 3, 0, 0, 2, 3, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 4, 0, 2, 0, 0, 0, 3, 0, 0, 0, 2, 0, 4, 0, 1, 1, 0, 0, 3, 0, 0, 6, 0, 0, 7, 0, 0, 6, 0, 0, 3, 0, 0, 1 ]
[ "nonn", "tabf" ]
A323556
[ 1, 1, 3, 1, 3, 5, 7, 1, 11, 13, 7, 9, 3, 5, 15, 1, 27, 29, 23, 25, 19, 21, 15, 17, 11, 13, 7, 9, 3, 5, 31, 1, 59, 29, 23, 25, 19, 53, 47, 49, 43, 13, 7, 9, 3, 37, 31, 33, 27, 61, 55, 57, 51, 21, 15, 17, 11, 45, 39, 41, 35, 5, 63, 1, 123, 93, 23, 25, 83, 53, 47, 49, 43, 13, 71, 73, 3, 101, 95, 97, 91, 61, 119, 121, 51, 21, 15, 17, 11, 109, 39, 41, 99, 69, 63 ]
[ "nonn", "tabf" ]
A282963
[ 0, 0, 5, 17, 75, 295, 1062, 3811, 13107, 44498, 148305, 488130, 1588811, 5122801, 16384193, 52029375, 164193163, 515276894, 1609014076, 5001795369, 15485379275, 47764505823, 146829462806, 449951243863, 1374888588530, 4189987614075 ]
[ "nonn" ]