id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A085241
[ 1, -1, 0, 1, -1, 1, -1, 0, 1, -1, 1, -1, 0, 1, -1, 0, 1, -1, 1, -1, 0, 1, -1, 1, -1, 0, 1, -1, 0, 1, -1, 1, -1, 0, 1, -1, 1, -1, 0, 1, -1, 1, -1, 0, 1, -1, 0, 1, -1, 1, -1, 0, 1, -1, 1, -1, 0, 1, -1, 0, 1, -1, 1, -1, 0, 1, -1, 1, -1, 0, 1, -1, 1, -1, 0, 1, -1, 0, 1, -1, 1, -1, 0, 1 ]
[ "sign" ]
A097949
[ -2, 1, -4, 9, -34, 121, -452, 1681, -6274, 23409, -87364, 326041, -1216802, 4541161, -16947844, 63250209, -236052994, 880961761, -3287794052, 12270214441, -45793063714, 170902040409, -637815097924, 2380358351281, -8883618307202, 33154114877521, -123732841202884 ]
[ "sign" ]
A159945
[ 2, 1, 3, 3, 2, 2, 4, 3, 4, 1, 3, 4, 3, 3, 5, 4, 4, 3, 5, 8, 2, 2, 4, 3, 4, 2, 4, 4, 4, 4, 6, 3, 4, 3, 5, 8, 4, 4, 6, 5, 6, 1, 3, 3, 3, 3, 5, 8, 4, 3, 6, 6, 3, 3, 5, 4, 5, 3, 5, 5, 5, 5, 7, 8, 4, 4, 5, 8, 5, 4, 6, 8, 6, 3, 5, 5, 6, 5, 7, 8, 6, 5, 8, 7, 2, 2, 4, 3, 4, 2, 4, 4, 4, 4, 6, 8, 6, 3, 5, 5, 4, 4, 7, 5, 6 ]
[ "nonn" ]
A157601
[ 1, 3, 450, 35490, 3461325, 429808743, 45598808332, 4382814679428, 396120762708465, 32858020705796384, 2495992345644238000, 177151945927883400000, 1.2079996873394323e+22, 8.009521292626683e+23 ]
[ "nonn" ]
A288603
[ 2, 4, 6, 8, 12, 18, 28, 44, 70, 112, 180, 290, 468, 756, 1222, 1976, 3196, 5170, 8364, 13532, 21894, 35424, 57316, 92738, 150052, 242788, 392838, 635624, 1028460, 1664082, 2692540, 4356620, 7049158, 11405776, 18454932, 29860706, 48315636, 78176340, 126491974 ]
[ "nonn", "easy" ]
A152804
[ 1, 1, 2, 10, 145, 3751, 151646, 8867442, 705137822, 73336545762, 9646131627159, 1567174898585612, 307919420040219200, 72014984300625674000, 1.975911908346051e+22, 6.288107535202467e+24 ]
[ "nonn" ]
A075209
[ 1, 1, 3, 6, 12, 36, 59, 208, 373, 1024, 1380, 5966, 6012, 20061, 32939, 91715, 99540, 381899, 390781, 1486746, 1856858 ]
[ "hard", "nonn" ]
A187063
[ 5, 21, 85, 341, 5461, 21845, 22369621, 89478485, 1431655765, 5726623061, 91625968981, 1501199875790165, 1537228672809129200, 98382635059784270000, 1.6902008003043058e+30, 1.7723039943798877e+36 ]
[ "nonn" ]
A009321
[ 0, 1, 0, 1, -5, 23, -129, 894, -7202, 65365, -661763, 7412348, -91009060, 1214988851, -17522921545, 271538506004, -4499710415184, 79404970485241, -1486680068450391, 29435486083635796, -614519419914446300 ]
[ "sign", "easy" ]
A010698
[ 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2, 8, 2 ]
[ "nonn", "easy" ]
A029601
[ 1, 2, 3, 5, 7, 8, 9, 15, 11, 24, 26, 14, 13, 35, 50, 40, 17, 48, 85, 90, 57, 20, 63, 133, 175, 147, 77, 23, 19, 80, 196, 308, 322, 224, 100, 21, 99, 276, 504, 630, 546, 324, 126, 29, 120, 375, 780, 1134, 1176, 870, 450, 155, 32, 25, 143, 495, 1155, 1914, 2310, 2046 ]
[ "nonn" ]
A118064
[ 1, 3, 2, 3, 9, 8, 2, 1, 4, 6, 8, 0, 6 ]
[ "cons", "base", "nonn", "hard", "more" ]
A055672
[ 0, 0, 1, 4, 0, 6, 0, 8, 0, 0, 0, 12, 0, 14, 0, 0, 0, 18, 0, 20, 0, 0, 0, 24, 0, 0, 0, 0, 0, 30, 0, 32, 0, 0, 0, 0, 0, 38, 0, 0, 0, 42, 0, 44, 0, 0, 0, 48, 0, 0, 0, 0, 0, 54, 0, 0, 0, 0, 0, 60, 0, 62, 0, 0, 0, 0, 0, 68, 0, 0, 0, 72, 0, 74, 0, 0, 0, 0, 0, 80, 0, 0, 0, 84, 0, 0, 0, 0, 0, 90 ]
[ "nonn", "easy", "nice" ]
A264415
[ 1, 15, -105, 1575, -29190, 603225, -13352850, 309605625, -7422255645, 182481301800, -4575894819300, 116581172754375, -3009161401332975, 78523515330379870, -2068113764887829000, 54904020923799340000, -1.4676923091212989e+21, 3.947272537279851e+22, -1.0672962359152782e+24, 2.899635791549668e+25, -7.911470234832627e+26, 2.1669197341488266e+28 ]
[ "sign" ]
A310912
[ 1, 4, 7, 14, 18, 21, 27, 27, 39, 37, 48, 46, 52, 57, 59, 71, 67, 79, 74, 86, 87, 92, 100, 97, 110, 105, 119, 116, 124, 128, 130, 141, 137, 149, 145, 156, 158, 164, 170, 168, 178, 177, 188, 189, 195, 198, 201, 208, 210, 218 ]
[ "nonn" ]
A014479
[ 1, 8, 72, 768, 9600, 138240, 2257920, 41287680, 836075520, 18579456000, 449622835200, 11771943321600, 331576403558400, 9998303861145600, 321374052679680000, 10969567664799744000, 396275631890890750000 ]
[ "nonn" ]
A381091
[ 1, 1, 1, 2, 3, 4, 4, 5, 5, 6, 7, 7, 8 ]
[ "nonn", "more" ]
A078679
[ 1, 1, 3, 7, 17, 43, 111, 291, 771, 2059, 5533, 14943, 40523, 110271, 300949, 823417, 2257877, 6203239, 17071779, 47054475, 129872499, 358896927, 992907525, 2749737663, 7622185263, 21146597511, 58714466733, 163142652877, 453612137587, 1262048222181, 3513361583965 ]
[ "easy", "nonn" ]
A310031
[ 1, 3, 5, 8, 12, 16, 19, 20, 21, 24, 28, 32, 36, 39, 40, 41, 44, 49, 55, 58, 57, 57, 60, 65, 71, 75, 76, 76, 77, 81, 88, 94, 95, 93, 93, 97, 104, 110, 112, 112, 112, 114, 120, 127, 131, 131, 129, 130, 136, 143 ]
[ "nonn" ]
A114821
[ 48, 60, 90, 126, 176, 258, 297, 315, 375, 385, 410, 430, 441, 459, 474, 475, 496, 555, 609, 621, 627, 638, 682, 710, 711, 729, 734, 759, 805, 814, 826, 854, 875, 897, 903, 906, 908, 925, 932, 935, 981, 987, 994, 1022, 1067, 1089, 1105, 1244, 1246, 1251, 1265, 1285, 1341, 1348 ]
[ "hard", "nonn" ]
A384724
[ 0, 0, 0, 0, 5, 15, 39, 70, 132, 197, 311, 421, 606, 771, 1047, 1275, 1655, 1968, 2466, 2863, 3510, 4004, 4802, 5416, 6384, 7116, 8286, 9144, 10517, 11535, 13125, 14290, 16140, 17465, 19565, 21085, 23454, 25155, 27837, 29727, 32711, 34836, 38136, 40471, 44142, 46700, 50720, 53548, 57936, 61008 ]
[ "nonn" ]
A332873
[ 0, 0, 0, 0, 22, 340, 3954, 44716, 536858, 7056252, 102140970, 1622267196, 28090317226, 526854073564, 10641328363722, 230283141084220, 5315654511587498, 130370766447282200, 3385534661270087000, 92801587312544830000, 2.6776877962212226e+21, 8.1124824998425e+22 ]
[ "nonn" ]
A330244
[ 70, 10430, 1554070, 5681270, 6365870 ]
[ "nonn", "more" ]
A214383
[ 8, 224, 18480, 4107248, 2347567992, 3366219398864, 11944886965820440 ]
[ "nonn" ]
A383463
[ 1, 0, 0, 0, 2, 4, 9, 3, 0, 4, 8, 7, 6, 7, 5, 3, 2, 6, 1, 7, 4, 8, 1, 3, 5, 7, 9, 8, 2, 0, 3, 8, 0, 1, 9, 7, 9, 0, 2, 1, 5, 5, 2, 7, 1, 5, 6, 4, 2, 8, 6, 8, 9, 0, 8, 9, 1, 3, 9, 1, 6, 7, 0, 4, 7, 4, 6, 5, 4, 0, 3, 0, 7, 8, 6, 8, 8, 2, 4, 7, 8, 9, 8, 9, 3, 7, 7, 3, 0, 9, 2, 0, 4, 6, 7, 8, 3, 7, 8, 5, 4, 1, 8, 6, 6 ]
[ "nonn", "cons" ]
A335331
[ 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 37, 43, 47, 53, 61, 71, 73, 89, 97, 103, 107, 113, 131, 149, 151, 173, 181, 197, 223, 227, 229, 251, 263, 281, 307, 311, 349, 359, 379, 409, 419, 433, 463, 503, 521, 541, 571, 593, 613, 659, 691, 701, 719, 761, 809, 827, 853, 863 ]
[ "nonn" ]
A084459
[ 2, 3, 6, 1, 7, 11, 4, 5, 9, 14, 8, 16, 10, 20, 12, 13, 21, 15, 26, 17, 18, 19, 27, 33, 22, 23, 24, 25, 30, 37, 28, 29, 39, 31, 32, 44, 34, 35, 36, 46, 38, 52, 40, 41, 42, 43, 53, 45, 60, 47, 48, 49, 50, 51, 57, 65, 54, 55, 56, 68, 58, 59, 74, 61, 62, 63, 64, 76, 66, 67, 83, 69 ]
[ "nonn" ]
A302805
[ 16, 384, 5117, 74072, 1089773, 15904814, 232260380, 3396923500, 49653502029, 725819333902, 10610883930284, 155117154439613, 2267613174993517, 33149833862902868, 484610500065661950, 7084420896663049000 ]
[ "nonn" ]
A023086
[ 0, 125874, 128574, 142587, 142857, 258714, 258741, 285714, 285741, 412587, 412857, 425871, 428571, 1025874, 1028574, 1042587, 1042857, 1052874, 1054287, 1072854, 1074285, 1078524, 1078542, 1085274, 1085427, 1087254, 1087425, 1087524, 1087542 ]
[ "nonn", "base" ]
A210638
[ -1, 1, -1, 1, -1, -1, 1, -1, 0, -1, 1, -1, 1, 1, -1, 1, -1, 2, 0, 1, -1, 1, -1, 3, -4, -2, -2, -1, 1, -1, 4, -11, 8, 2, -9, -1, 1, -1, 5, -21, 49, -14, 9, -9, -1, 1, -1, 6, -34, 139, -255, 13, -24, 50, -1, 1, -1, 7, -50, 296, -1106, 1508, 45, -80, 267, -1, 1 ]
[ "sign", "tabl", "changed" ]
A303692
[ 0, 0, 9, 16, 50, 72, 147, 192, 324, 400, 605, 720, 1014, 1176, 1575, 1792, 2312, 2592, 3249, 3600, 4410, 4840, 5819, 6336, 7500, 8112, 9477, 10192, 11774, 12600, 14415, 15360, 17424, 18496, 20825, 22032, 24642, 25992, 28899, 30400, 33620, 35280, 38829, 40656 ]
[ "nonn", "easy" ]
A256462
[ 1, 14, 238, 4092, 70070, 1192516, 20177164, 339653880, 5692584870, 95050101300, 1581953021220, 26255495764680, 434697697648188, 7181635051211432, 118422830335911650, 1949458102569167400, 32043155434056810000, 525974795270875800000 ]
[ "easy", "nonn" ]
A339250
[ 27, 351, 1728, 3003, 5824, 7371, 7722, 17550, 19305, 34398, 46332, 51975, 54054, 61425, 78975, 100386, 112320, 146432, 252252, 314496, 359424, 371800, 386100, 393822, 412776, 442442, 459459 ]
[ "nonn" ]
A269264
[ 5, 9, 13, 16, 23, 24, 28, 35, 37, 38, 40, 47, 48, 51, 52, 57, 61, 65, 67, 70, 79, 83, 84, 85, 88, 90, 102, 111, 144, 148, 157, 162, 168, 169, 177, 181, 190, 237, 246, 298, 308, 346 ]
[ "nonn", "more", "hard" ]
A254457
[ 512, 3036, 3036, 16240, 26380, 16240, 76832, 196684, 196684, 76832, 348032, 1279568, 2085712, 1279568, 348032, 1511152, 8004340, 19716320, 19716320, 8004340, 1511152, 6440848, 48345120, 180449544, 275772848, 180449544, 48345120 ]
[ "nonn", "tabl" ]
A110157
[ 0, 1, 2, 3, 2, 3, 4, 5, 2, 3, 4, 5, 4, 5, 6, 7, 2, 3, 4, 5, 4, 5, 6, 7, 4, 3, 4, 3, 6, 7, 8, 9, 2, 3, 4, 5, 4, 5, 6, 7, 4, 5, 6, 7, 6, 7, 8, 9, 4, 5, 4, 5, 4, 5, 4, 5, 6, 7, 8, 9, 8, 9, 10, 5, 2, 3, 4, 5, 4, 5, 6, 7, 4, 5, 6, 7, 6, 7, 8, 9, 4, 3, 4, 5, 6, 7, 8, 9, 6, 7, 8, 9, 8, 9, 10, 11, 4, 5, 6, 3, 4, 5, 6, 7 ]
[ "nonn" ]
A237533
[ 1692, 23680, 330210, 4857060, 70923320, 1050283590, 15572216080, 232373548624, 3478459510326, 52287525496440, 788422197696632, 11925360245325346, 180851239539089630, 2749259666023394300, 41880914986686185000 ]
[ "nonn" ]
A054596
[ 1, 3, 37, 435, 6996, 134428, 3094785, 82061325, 2473950880, 83606473566, 3132506471139, 128918727009163, 5784184164416490, 281105943314654750, 14716271275161096000, 825944690635111300000, 4.949036293788543e+22 ]
[ "nice", "nonn" ]
A100343
[ 1, 1, 3, 7, 17, 24, 65, 284, 633, 917, 2467, 5851, 14169, 20020, 54209, 453692, 961593, 1415285, 3792163, 8999611, 21791385, 30790996, 83373377, 364284504, 811942385, 1176226889, 3164396163, 7505019215, 18174434593, 25679453808, 69533342209 ]
[ "cofr", "nonn" ]
A035267
[ 1, 3, 4, 7, 9, 11, 12, 16, 21, 25, 27, 28, 33, 36, 37, 41, 44, 47, 48, 49, 53, 63, 64, 67, 71, 73, 75, 77, 81, 83, 84, 99, 100, 101, 107, 108, 111, 112, 121, 123, 127, 132, 137, 139, 141, 144, 147, 148, 149, 151, 157, 159, 164, 169, 173, 175, 176, 181, 188 ]
[ "nonn" ]
A212543
[ 0, 0, 1, 1, 3, 4, 8, 10, 17, 22, 33, 42, 60, 75, 103, 128, 169, 209, 271, 331, 421, 513, 642, 777, 963, 1158, 1421, 1703, 2070, 2471, 2985, 3546, 4257, 5043, 6019, 7105, 8443, 9933, 11752, 13790, 16247, 19012, 22326, 26052, 30492, 35500, 41420, 48108, 55980 ]
[ "nonn" ]
A032979
[ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 17, 18, 19, 26, 27, 28, 35, 36, 37, 44, 45, 46, 53, 54, 55, 62, 63, 64, 65, 72, 73, 74, 81, 82, 83, 136, 137, 138, 145, 146, 147, 154, 155, 156, 209, 210, 211, 218, 219, 220, 227, 228, 229, 282, 283, 284 ]
[ "nonn", "base" ]
A153691
[ 1, 1, 1, 1, 2, 4, 19, 21, 28, 151, 200, 709, 767, 5727, 15908, 162819, 302991 ]
[ "nonn", "more" ]
A246733
[ 424, 1096, 2884, 7612, 19992, 52112, 135776, 354428, 926912, 2426008, 6344712, 16581304, 43323852, 113217276, 295956684, 773719596, 2022600900, 5286817120, 13818445276, 36118847720, 94411371892, 246786721208, 645084592792 ]
[ "nonn" ]
A285987
[ 1, 5, 19, 51, 197, 901, 2038, 5839, 13476, 18517, 36993, 60544, 60557, 60555, 60553, 705691, 705758, 2528254, 4762881, 5645512, 5645535, 20250250, 20250249, 26733097, 66978018, 66978001, 66978016, 66978065, 66978193, 133956385, 187142781, 589907497, 1018886425 ]
[ "nonn", "base" ]
A223779
[ 11, 155, 1809, 18368, 170596, 1467585, 11958241, 93143325, 701011531, 5122796281, 36580579223, 256023626995, 1763257257909, 11972451382991, 80358098290959, 533816210907730, 3516112638056226, 22982258501597896, 149261848394091780 ]
[ "nonn" ]
A381199
[ 1, 36, 6300, 1718640, 575675100, 216636756336, 87874675224336, 37563969509352000, 16692217815436149000, 7.642084994921759e+21, 3.582530520581922e+24, 1.7120836703168982e+27, 8.313576431527887e+29, 4.091545548165835e+32, 2.0369078313621716e+35 ]
[ "nonn" ]
A251594
[ 1, 1, 7, 240, 21720, 3371661, 753384764, 221280081152, 8057098267140, 34901583348508310, 17450751376913066000, 9.843352171270598e+21, 6.153355867118768e+24, 4.203420758907187e+27, 3.102284883642895e+30 ]
[ "nonn" ]
A160046
[ 0, 1, 3, 5, 15, 10, 77, 47, 75, 131, 1507, 142, 637, 353, 1089, 1487, 12937, 6989, 135451, 7255, 7381, 82451, 1925353, 84866, 430105, 1132133, 3437979, 1158863, 33980257, 1183745, 37068467, 4828073, 2436559, 41781863, 42142223, 42482563 ]
[ "nonn" ]
A202444
[ 484, 836, 1722, 3122, 5512, 8996, 14338, 21674, 32120, 45844, 64378, 87922, 118488, 156308, 203938, 261642, 332584, 417060, 518906, 638450, 780264, 944708, 1137154, 1357994, 1613464, 1903988, 2236730, 2612146, 3038392, 3515956, 4054050, 4653194 ]
[ "nonn" ]
A318371
[ 1, 1, 0, 2, 0, 1, 0, 3, 1, 0, 0, 3, 0, 0, 0, 5, 0, 4, 0, 1, 0, 0, 0, 6, 0, 0, 4, 0, 0, 2 ]
[ "nonn", "more" ]
A004180
[ 0, 1, 2, 3, 4, 0, 6, 7, 8, 9, 10, 11, 12, 13, 14, 1, 16, 17, 18, 19, 20, 21, 22, 23, 24, 2, 26, 27, 28, 29, 30, 31, 32, 33, 34, 3, 36, 37, 38, 39, 40, 41, 42, 43, 44, 4, 46, 47, 48, 49, 0, 1, 2, 3, 4, 0, 6, 7, 8, 9, 60, 61, 62, 63, 64, 6, 66, 67, 68, 69, 70, 71, 72, 73, 74 ]
[ "nonn", "base", "easy" ]
A155502
[ 1, 4, 4, 0, 6, 4, 2, 6, 9, 8, 2, 9, 5, 7, 8, 7, 4, 4, 9, 2, 9, 0, 1, 0, 6, 4, 7, 6, 4, 9, 6, 4, 6, 3, 3, 9, 1, 9, 5, 4, 9, 4, 3, 7, 9, 7, 6, 7, 4, 8, 6, 0, 2, 0, 4, 0, 1, 8, 2, 5, 2, 1, 3, 1, 9, 3, 8, 6, 4, 4, 9, 2, 5, 5, 3, 6, 2, 0, 8, 4, 0, 5, 2, 8, 3, 3, 7, 9, 9, 1, 4, 4, 5, 3, 1, 2, 3, 3, 8 ]
[ "nonn", "cons" ]
A179389
[ 0, 1, 2, 6, 55, 360, 3035, 20502, 160077, 1369317 ]
[ "nonn", "more" ]
A082325
[ 0, 1, 2, 3, 4, 5, 7, 6, 8, 9, 10, 12, 11, 13, 17, 18, 16, 14, 15, 21, 19, 20, 22, 23, 24, 26, 25, 27, 31, 32, 30, 28, 29, 35, 33, 34, 36, 45, 46, 49, 48, 50, 44, 47, 42, 37, 38, 43, 40, 39, 41, 58, 59, 56, 51, 52, 57, 53, 54, 55, 63, 60, 61, 62, 64, 65, 66, 68, 67, 69 ]
[ "nonn" ]
A285235
[ 1, 30, 622, 11378, 199809, 3499572, 62333543, 1141073295, 21593291506, 423749322362, 8637159909596, 182967605341204, 4028364756058464, 92147187469290770, 2188667860854516000, 53939340317601470000, 1.3781815493219802e+21, 3.6476226109960186e+22 ]
[ "nonn" ]
A212108
[ 0, 1, 13, 62, 187, 444, 885, 1616, 2677, 4227, 6326, 9163, 12742, 17468, 23167, 30278, 38876, 49268, 61315, 75858, 92363, 111867, 134039, 159426, 187841, 220810, 257093, 297936, 343312, 394178, 449481, 511840, 578961, 653514, 734486 ]
[ "nonn" ]
A212589
[ 1, 3, 8, 18, 34, 64, 118, 214, 382, 678, 1198, 2112, 3716, 6532, 11474, 20148, 35370, 62084, 108964, 191234, 335608, 588968, 1033584, 1813832, 3183072, 5585922, 9802630, 17202438, 30188196, 52976614, 92967500, 163146614, 286302374, 502425668, 881695610, 1547267962 ]
[ "nonn", "walk" ]
A039584
[ 0, 3, 5, 18, 21, 23, 30, 33, 35, 52, 62, 82, 97, 108, 111, 113, 126, 129, 131, 138, 141, 143, 152, 157, 180, 183, 185, 198, 201, 203, 210, 213, 215, 232, 242, 292, 310, 312, 315, 317, 322, 340, 350, 362, 372, 375, 377, 380, 392, 412, 422, 442, 457, 472, 490 ]
[ "nonn", "base", "easy" ]
A285007
[ 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, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 1, 0, 0, 2, 2, 1, 0, 1, 2, 2, 4, 3, 3, 4, 6, 5, 7, 11, 7, 3, 10, 6, 8, 15, 12, 15, 6, 8 ]
[ "nonn" ]
A142325
[ 71, 251, 431, 521, 701, 881, 971, 1061, 1151, 1511, 1601, 1871, 2141, 2411, 2591, 2861, 3041, 3221, 3491, 3581, 3671, 3761, 3851, 4211, 4391, 4481, 4751, 4931, 5021, 5381, 5471, 5651, 5741, 6011, 6101, 6551, 6911, 7001, 7451, 7541, 7901, 8081, 8171, 9161 ]
[ "nonn", "easy" ]
A134253
[ 1, 4, 12, 20, 58, 59, 69, 78, 92, 111, 120, 126, 136, 143, 150, 151, 164, 165, 186, 193, 197, 206, 211, 213, 214, 225, 234, 247, 254, 261, 267, 271, 288, 319, 342, 352, 353, 354, 364, 370, 373, 378, 384, 386, 387, 416, 421, 436, 439, 449, 452, 455, 457, 462 ]
[ "nonn", "base" ]
A308519
[ 1, -1, 1, 0, -2, 2, 9, -24, -80, 339, 1127, -6438, -22051, 179670, 705969, -6316587, -34059363, 234694313, 1788358694, -10539103220, -107105535812, 679821765685, 9404735956848, -39383677719404, -965379929608361, 375758547940149, 86199829280567630, 158307964563289200 ]
[ "sign" ]
A301119
[ 1, 4, 10, 19, 31, 51, 76, 98, 124, 161, 201, 239, 284, 335, 387, 445, 504, 568, 642, 713, 785, 869, 956, 1040, 1134, 1234, 1330, 1435, 1543, 1653, 1776, 1894, 2010, 2143, 2279, 2409, 2550, 2697, 2839, 2993, 3150, 3304, 3474, 3641, 3803, 3985, 4168 ]
[ "nonn" ]
A201857
[ 3, 67, 283, 643, 4603, 5827, 8707, 12163, 14107, 18427, 34843, 38083, 41467, 56443, 83227, 93307, 98563, 103963, 109507, 139387, 165883, 172867, 194683, 202243, 233923, 267907, 276763, 285763, 383683, 449347, 484123, 544963, 596227 ]
[ "nonn", "easy" ]
A271852
[ 0, 1, 2, 1, 2, 2, 1, 2, 8, 42, 1, 3, 14, 124, 580, 1, 3, 22, 208, 2782, 31892, 1, 3, 22, 304, 6580, 168566, 3193380, 1, 3, 22, 384, 11246, 471344, 21337480, 800156720, 1, 3, 23, 408, 15536, 932092, 72638356, 6300361544, 442390366776, 1, 3, 23, 426, 18860 ]
[ "nonn", "tabl" ]
A044794
[ 81, 181, 281, 381, 481, 581, 681, 781, 819, 881, 981, 1081, 1181, 1281, 1381, 1481, 1581, 1681, 1781, 1819, 1881, 1981, 2081, 2181, 2281, 2381, 2481, 2581, 2681, 2781, 2819, 2881, 2981, 3081, 3181, 3281, 3381, 3481, 3581 ]
[ "nonn", "base" ]
A317631
[ 1, 1, 1, 8, 200, 15901 ]
[ "nonn", "more" ]
A189560
[ 3, 5, 21, 75, 151, 371, 671, 791, 311, 551, 1271, 1391, 1031, 2471, 2231, 4271, 1991, 3191, 5351, 7871, 7751, 7031, 8951, 8711, 11831, 5591, 19631, 10391, 15791, 20711, 30071, 17111, 30551, 27191, 40031, 31391, 52631, 49271, 35591, 42311, 50951, 92231 ]
[ "nonn" ]
A251286
[ 22, 71, 219, 701, 2193, 6980, 21966, 69681, 219860, 696284, 2199557, 6960357, 21999804, 69591126, 220014756, 695843558, 2200194145, 6958021138, 22001843859, 69577286765, 220014836192, 695749296057, 2200100105526, 6957283657381 ]
[ "nonn" ]
A296736
[ 12, 287, 2832, 34086, 458494, 5692727, 71592909, 910873718, 11510112796, 145527342435, 1842174204547, 23306130141703, 294854441759807, 3730755699268945, 47202652238197780, 597219119294013300, 7556243023072285000, 95604134019241720000, 1.2096146604112224e+21 ]
[ "nonn" ]
A368768
[ 1, 0, 5, 0, 35, 105, 756, 5082, 40986, 368379, 3684505, 40528554, 486344013, 6322470349, 88514587266, 1327718805930, 21243500898756, 361139515274007, 6500511274938111, 123509714223816800, 2470194284476345000, 51874079974003230000, 1.141229759428071e+21 ]
[ "nonn" ]
A044928
[ 1, 1, 1, 1, 1, 2, -2, 2, 2, 2, 2, 2, 2, -2, 2, 2, 2, 2, 2, 2, -2, 2, 2, 2, 2, 2, 2, -2, 2, 2, 2, 2, 2, 2, -2, -1, 3, 3, 3, 3, 3, -1, 3, -1, -1, -1, -1, 3, 3, -1, 3, 3, 3, 3, 3, 3, -1, 3, 3, 3, 3, 3, 3, -1, 3, 3, 3, 3, 3, 3, -1, -1, 3, 3, 3, 3, 3, 3, -1, 3, 3, 3 ]
[ "sign", "base" ]
A157547
[ 1, 3, 126, 2170, 37335, 921333, 21967484, 466292604, 9161931075, 164162481681, 2705726857350, 41747317681290, 619096670144225, 8923605271290360, 124998845674120930, 1699006653803990500, 22382667992161145000 ]
[ "nonn" ]
A272685
[ 1, 15, 14, 13, 12, 217, 0, 215, 45, 213, 44, 43, 209, 42, 207, 2, 573, 1327, 572, 130, 185, 570, 1492, 569, 78, 568, 128, 567, 1318, 1498, 565, 188, 564, 10, 563, 1312, 562, 1504, 1309, 560, 1507, 693, 74, 558, 1510, 557, 192, 2360, 6085, 350, 1480, 708, 6083, 3643 ]
[ "nonn", "base" ]
A352987
[ 65700513721, 168003672409, 459814831561, 13685652197857, 34477679139751, 74031531351121, 92327722290241, 206175669172201, 704077371354601, 1882982959757929, 2901482064497017, 3715607011189609, 5516564718607489, 5636724028491697, 6137426373439681, 14987802403246608 ]
[ "nonn" ]
A020454
[ 11, 61, 661, 6661, 11161, 16111, 16661, 66161, 111611, 161611, 611111, 616111, 1111661, 1611161, 1616161, 1616611, 1661111, 1661161, 1666111, 6111661, 6116111, 6116161, 6161161, 6611611, 6661111, 6661661, 11111161, 11166611, 11616611 ]
[ "nonn", "base" ]
A287171
[ 998051413, 4976990483, 5038640083, 5280622483, 5901887533, 6840045103, 8733200093, 11838052453, 11978292923, 12348742883, 12844988753, 13009792643, 13658681843, 13849573433 ]
[ "nonn" ]
A163621
[ 3, 5, 6, 7, 10, 7, 9, 14, 11, 12, 11, 18, 15, 20, 13, 13, 22, 19, 28, 21, 14, 15, 26, 23, 36, 29, 22, 15, 17, 30, 27, 44, 37, 30, 23, 24, 19, 34, 31, 52, 45, 38, 31, 40, 25, 21, 38, 35, 60, 53, 46, 39, 56, 41, 26, 23, 42, 39, 68, 61, 54, 47, 72, 57, 42, 27, 25, 46, 43, 76, 69 ]
[ "base", "nonn", "tabl" ]
A310005
[ 1, 3, 4, 6, 10, 16, 22, 24, 23, 25, 29, 31, 32, 35, 45, 55, 56, 53, 50, 54, 59, 59, 59, 63, 79, 93, 91, 81, 76, 83, 90, 88, 85, 92, 114, 132, 125, 109, 103, 111, 120, 116, 112, 120, 148, 171, 160, 138, 129, 140 ]
[ "nonn" ]
A385768
[ 409, 449, 499, 4049, 4099, 4409, 4909, 4999, 9049, 9949, 40009, 40099, 40499, 40949, 44449, 44909, 49009, 49409, 49499, 49999, 90499, 94009, 94049, 94099, 94949, 94999, 99409, 400009, 400409, 400949, 404009, 404099, 404449, 409099, 409499, 409909, 409999 ]
[ "nonn", "base", "easy" ]
A122944
[ 1, 1, -1, -1, -1, 1, 0, 2, 1, -1, 1, -1, -4, -1, 1, 0, -2, 2, 6, 1, -1, 0, 0, 4, -2, -7, -1, 1, 0, 2, -1, -9, 3, 9, 1, -1, 1, 1, -13, 8, 20, -8, -13, -1, 1, 0, -2, -2, 24, -15, -31, 13, 17, 1, -1, 0, 0, 4, 4, -40, 20, 44, -14, -19, -1, 1, 0, 0, 0, -8, -4, 56, -24, -54, 14, 20, 1, -1, 0, 0, 0, 0, 16, 8, -88, 30, 71, -15, -22, -1, 1, 0, 0, 0, 16, 8 ]
[ "tabl", "sign", "changed" ]
A355244
[ 1, 1, 1, 1, 2, 2, 1, 3, 2, 2, 1, 1, 2, 2, 2, 1, 1, 2, 2, 2, 2, 1, 6, 2, 2, 2, 1, 6, 2, 6, 2, 2, 2, 2, 2, 2, 1, 1, 2, 2, 2, 1, 1, 2, 1, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 6, 2, 1, 2, 2, 1, 3, 2, -1, 2, 2, 3, 2, 1, 2, -1, 3, 2, 1, 2, 2, 2, 2, 6, 2, 1, 2, 2, 1, 2 ]
[ "tabl", "sign" ]
A204223
[ 81, 450, 2500, 11100, 49284, 192474, 751689, 2707641, 9753129, 33291180, 113635600, 373782240, 1229484096, 3940246872, 12627691129, 39725765841, 124974269289, 387960161310, 1204352604900, 3702976839180, 11385401099076 ]
[ "nonn" ]
A260681
[ 1, 1, 3, 5, 7, 9, 62, 105, 4612, 477839, 5221660, 120695273, 13517914794489426000, 949763730038903500000, 8.059932478396196e+35, 2.5723322840848022e+63 ]
[ "nonn" ]
A366885
[ 1, 1, 1, 4, 1, 12, 4, 6, 1, 36, 12, 30, 4, 24, 6, 8, 1, 108, 36, 150, 12, 120, 30, 56, 4, 72, 24, 48, 6, 32, 8, 12, 1, 324, 108, 750, 36, 600, 150, 392, 12, 360, 120, 336, 30, 224, 56, 132, 4, 216, 72, 240, 24, 192, 48, 96, 6, 96, 32, 72, 8, 48, 12, 14, 1, 972, 324, 3750, 108, 3000, 750, 2744, 36, 1800, 600, 2352 ]
[ "nonn" ]
A361421
[ 840, 2040, 4440, 9240, 25320, 51000, 117480, 271320, 765480, 1531320, 3721800, 5956440, 12295560, 25086840, 54141960, 108284280, 250301640, 502213560, 1007626440, 2017856760, 4039750920, 8079502200, 19596145800, 44369345400, 71495068200, 115576350360, 231152701080 ]
[ "nonn" ]
A151106
[ 1, 3, 11, 44, 188, 834, 3796, 17595, 82652, 392296, 1876988, 9038428, 43750078, 212672939, 1037483310, 5076179561, 24898992612, 122392690133, 602735470493, 2972948379238, 14684093287089, 72615661668126, 359478469000610, 1781231772491187, 8833368751277994, 43837986172512584, 217700030074601250 ]
[ "nonn", "walk" ]
A366791
[ 1, 1, 2, 1, 3, 2, 4, 1, 5, 3, 6, 2, 5, 4, 7, 1, 8, 5, 9, 3, 10, 6, 11, 2, 12, 5, 13, 4, 11, 7, 14, 1, 15, 8, 16, 5, 17, 9, 13, 3, 18, 10, 8, 6, 14, 11, 19, 2, 10, 12, 20, 5, 21, 13, 22, 4, 5, 11, 20, 7, 6, 14, 11, 1, 19, 15, 23, 8, 24, 16, 6, 5, 16, 17, 25, 9, 12, 13, 24, 3, 26, 18, 19, 10, 15, 8, 26, 6, 8, 14, 16, 11, 27, 19, 6 ]
[ "nonn", "look" ]
A228389
[ 13, 169, 3513, 62546, 1177709, 21683149, 402968942, 7458864720, 138305554175, 2562514124813, 47494743530686, 880148347563002, 16311635295084772, 302290762813484300, 5602201879906920000, 103822064306056860000 ]
[ "nonn" ]
A083342
[ 1, 0, 3, 4, 6, 5, 3, 8, 8, 1, 8, 9, 7, 4, 3, 7, 9, 1, 1, 6, 1, 9, 7, 9, 4, 2, 9, 8, 4, 6, 4, 6, 3, 8, 2, 5, 4, 6, 7, 0, 3, 0, 7, 9, 8, 4, 3, 4, 4, 3, 8, 5, 2, 5, 4, 5, 0, 3, 0, 7, 0, 2, 8, 1, 2, 8, 1, 6, 3, 3, 5, 3, 9, 3, 8, 6, 6, 0, 1, 6, 0, 7, 5, 4, 7, 9, 4, 1, 3, 9, 0, 2, 5, 7, 5, 6, 7, 4, 6, 9, 3, 8 ]
[ "nonn", "cons" ]
A029233
[ 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 2, 3, 3, 4, 3, 5, 5, 6, 5, 7, 6, 7, 7, 9, 8, 10, 10, 12, 11, 13, 13, 14, 14, 16, 16, 18, 18, 21, 20, 23, 22, 25, 24, 27, 27, 30, 30, 33, 33, 36, 36, 39, 39, 42, 42, 46, 46, 50, 50 ]
[ "nonn", "easy" ]
A005277
[ 14, 26, 34, 38, 50, 62, 68, 74, 76, 86, 90, 94, 98, 114, 118, 122, 124, 134, 142, 146, 152, 154, 158, 170, 174, 182, 186, 188, 194, 202, 206, 214, 218, 230, 234, 236, 242, 244, 246, 248, 254, 258, 266, 274, 278, 284, 286, 290, 298, 302, 304, 308, 314, 318 ]
[ "nonn" ]
A138098
[ 2, 1, 10, 9, 8, 7, 6, 5, 4, 3, 18, 17, 16, 15, 14, 13, 12, 11, 36, 35, 34, 33, 32, 31, 30, 29, 28, 27, 26, 25, 24, 23, 22, 21, 20, 19, 54, 53, 52, 51, 50, 49, 48, 47, 46, 45, 44, 43, 42, 41, 40, 39, 38, 37, 86, 85, 84, 83, 82, 81, 80, 79, 78, 77, 76, 75, 74, 73, 72, 71, 70, 69, 68, 67, 66, 65, 64, 63, 62, 61, 60, 59, 58, 57, 56, 55, 118, 117, 116, 115, 114, 113, 112, 111, 110, 109, 108 ]
[ "nonn" ]
A049307
[ 5, 7, 9, 25, 26, 31, 37, 43, 46, 47, 48, 53, 59, 60, 61, 63, 68, 69, 70, 72, 74, 76, 80, 85, 87, 88, 89, 91, 94, 97, 101, 104, 107, 124, 132, 135, 140, 148, 158, 166, 170, 180, 187, 190, 199, 209, 211, 215, 231, 243, 244, 256, 266, 270, 271, 279, 283, 288, 289, 291 ]
[ "nonn", "base", "easy" ]
A051282
[ 0, 1, 2, 1, 3, 2, 4, 3, 1, 5, 2, 4, 2, 6, 3, 5, 3, 7, 4, 2, 6, 1, 3, 4, 8, 5, 3, 7, 2, 4, 5, 9, 6, 4, 8, 3, 5, 2, 6, 10, 3, 7, 2, 4, 5, 9, 4, 6, 3, 7, 11, 4, 8, 1, 3, 5, 6, 10, 5, 7, 4, 8, 12, 5, 9, 2, 4, 6, 3, 7, 11, 2, 4, 6, 8, 5, 3, 9, 5, 13, 6, 10, 3, 5, 7, 4, 8, 12, 3, 5, 7, 9, 2, 6, 4, 10, 6, 14, 7, 11, 4, 6, 8, 5, 9, 13, 4, 6, 8, 3, 10, 3, 7, 1, 5, 11, 7, 4 ]
[ "nice", "nonn" ]
A188397
[ 1, 2, 4, 5, 6, 7, 8, 9, 11, 12, 13, 14, 15, 16, 18, 19, 21, 22, 23, 24, 25, 26, 28, 29, 30, 31, 32, 33, 35, 36, 38, 39, 40, 41, 42, 43, 45, 46, 47, 48, 49, 50, 52, 53, 54, 55, 56, 57, 59, 60, 62, 63, 64, 65, 66, 67, 69, 70, 71, 72, 73, 74, 76, 77, 79, 80, 81, 82, 83, 84, 86, 87, 88, 89, 90, 91, 93, 94, 95, 96, 97, 98, 100, 101, 103, 104, 105, 106, 107, 108, 110, 111, 112 ]
[ "nonn" ]
A312227
[ 1, 4, 8, 14, 14, 22, 24, 34, 32, 42, 44, 46, 48, 58, 60, 66, 64, 74, 74, 86, 88, 94, 90, 102, 100, 110, 106, 118, 120, 122, 128, 138, 140, 142, 144, 154, 156, 154, 160, 170, 166, 182, 180, 190, 182, 198, 200, 206, 198, 214 ]
[ "nonn" ]
A369019
[ 0, 0, 1, 0, 2, 4, 0, 9, 12, 36, 0, 64, 72, 144, 432, 0, 625, 640, 1080, 2160, 6400, 0, 7776, 7500, 11520, 19440, 38400, 112500, 0, 117649, 108864, 157500, 241920, 403200, 787500, 2286144, 0, 2097152, 1882384, 2612736, 3780000, 5734400, 9450000, 18289152, 52706752 ]
[ "nonn", "tabl" ]
A071371
[ 1829413731, 13096880161, 28273111011, 32480018341, 79089694311, 330780346261, 363500177041, 602794125781, 679251409201, 905780175301, 956731265701, 1010903523841, 1011470714101, 1086338816631, 1312670706051 ]
[ "nonn" ]