id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A253974
[ 1, 8, 168, 5120, 190120, 7964208, 362370624, 17532536736, 889716433320, 46887220540160, 2546408317827088, 141659449976239100, 8033749056463329000, 462687411167492830000, 2.69800196993921e+22, 1.5890915576616903e+24, 9.436178634642378e+25 ]
[ "nonn" ]
A027168
[ 2, 4, 8, 24, 40, 144, 256, 768, 1408, 4736, 8064, 29440, 51712, 168960, 303104, 1056768, 1810432, 6651904, 11632640, 39452672, 70090752, 248676352, 427261952, 1575419904, 2748710912, 9519759360, 16819683328, 60294692864 ]
[ "nonn" ]
A342419
[ 2, 0, 0, 1, 0, 10, 0, 3, 25, 14, 0, 7, 0, 14, 70, 15, 0, -3, 0, 33, 70, 82, 0, 45, 49, 18, 185, 29, 0, 8, 0, 35, 410, 94, 98, 28, 0, 22, 90, 97, 0, 0, 0, 79, 279, 106, 0, -27, 49, 61, 470, 43, 0, -315, 574, ...
[ "sign" ]
A330392
[ 4, 3, 0, 4, 5, 3, 0, 3, 2, 4, 5, 1, 7, 4, 3, 9, 4, 1, 5, 6, 5, 7, 1, 0, 1, 8, 7, 8, 3, 2, 2, 0, 4, 3, 1, 8, 2, 6, 7, 1, 4, 9, 5, 4, 5, 8, 9, 8, 3, 8, 3, 9, 8, 3, 3, 7, 7, 7, 4, 0, 1, 3, 6, 8...
[ "nonn", "cons" ]
A084441
[ 5, 7, 11, 13, 19, 23, 31, 47, 59, 67, 83, 107, 131, 167, 179, 227, 263, 307, 347, 359, 383, 467, 479, 503, 563, 587, 631, 719, 733, 839, 863, 887, 983, 1019, 1187, 1283, 1307, 1319, 1367, 1439, 1487, 1523, 1619, 1723, 1823, 19...
[ "nonn", "easy" ]
A067856
[ 1, 1, -1, 2, -1, -1, -1, 4, 0, -1, -1, -2, -1, -1, 1, 8, -1, 0, -1, -2, 1, -1, -1, -4, 0, -1, 0, -2, -1, 1, -1, 16, 1, -1, 1, 0, -1, -1, 1, -4, -1, 1, -1, -2, 0, -1, -1, -8, 0, 0, 1, -2, -1, 0, 1, -4, 1, ...
[ "sign", "mult" ]
A314356
[ 1, 5, 7, 15, 15, 22, 27, 25, 39, 37, 44, 53, 47, 61, 67, 56, 85, 68, 81, 94, 79, 100, 105, 86, 129, 98, 119, 132, 111, 138, 143, 116, 173, 128, 157, 170, 143, 176, 181, 146, 217, 158, 195, 208, 175, 214, 219, 176, 261, ...
[ "nonn" ]
A242813
[ 1, 1, 5, 6, 3, 0, 8, 1, 2, 4, 8, 4, 0, 2, 3, 1, 1, 7, 8, 7, 0, 7, 1, 3, 5, 1, 2, 1, 9, 3, 8, 5, 6, 6, 9, 8, 5, 5, 4, 5, 4, 2, 7, 3, 4, 8, 5, 0, 5, 1, 4, 2, 3, 8, 8, 2, 6, 9, 5, 6, 6, 0, 1, 1...
[ "nonn", "cons" ]
A261982
[ 0, 0, 1, 1, 5, 11, 21, 51, 109, 229, 455, 959, 1947, 3963, 7999, 16033, 32333, 64919, 130221, 260967, 522733, 1045825, 2093855, 4189547, 8382315, 16768455, 33543127, 67093261, 134193413, 268404995, 536829045, 1073686083, 2147408773, 4294869253, 858...
[ "nonn" ]
A120926
[ 1, 4, 16, 60, 216, 756, 2592, 8748, 29160, 96228, 314928, 1023516, 3306744, 10628820, 34012224, 108413964, 344373768, 1090516932, 3443737680, 10847773692, 34093003032, 106928054964, 334731302496, 1046035320300, 3263630199336, 10167463313316, 31632108085872 ]
[ "nonn" ]
A217022
[ 1, 16, 121, 1024, 8464, 70225, 582169, 4826809, 40018276, 331786225, 2750792704, 22806436324, 189084955921, 1567676780761, 12997387725721, 107759513809984, 893418974713225, 7407211077304336, 61412145361267600, 509159460762351040 ]
[ "nonn" ]
A383666
[ 3, 7, 9, 10, 12, 15, 17, 18, 19, 20, 21, 22, 24, 25, 26, 28, 31, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 48, 49, 50, 51, 52, 53, 54, 56, 57, 58, 60, 63, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 7...
[ "nonn", "base", "easy" ]
A385028
[ 1, 1, 4, 16, 116, 903, 8551 ]
[ "nonn", "hard", "more" ]
A297142
[ 1, 2, 3, 4, 5, 6, 7, 9, 18, 27, 36, 45, 54, 63, 64, 72, 73, 74, 75, 76, 77, 78, 79, 82, 91, 100, 109, 118, 127, 128, 137, 144, 145, 146, 147, 148, 149, 150, 151, 155, 164, 173, 182, 191, 192, 201, 210, 216, 217, 218, ...
[ "nonn", "easy", "base" ]
A057345
[ 1, 8, 36, 48, 120, 360, 840, 672, 864, 1440, 1440, 1440, 1440, 5040, 5040, 10080, 10080, 8640, 8640, 8640, 30240, 30240, 30240, 60480, 60480, 60480, 60480, 60480, 60480, 60480, 60480, 120960, 120960, 120960, 302400, 302400, 302400, 302400, ...
[ "nonn" ]
A016259
[ 1, 20, 293, 3808, 46569, 549708, 6346381, 72206936, 813450257, 9101344516, 101341923189, 1124578223184, 12448896999865, 137566159357244, 1518254091799517, 16741005720753352, 184472748615956200 ]
[ "nonn" ]
A386516
[ 1, 3, 13, 183, 2843, 41323, 57109753, 1929510527, 760999599793 ]
[ "nonn", "more" ]
A112435
[ 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 4, 8, 16, 23, 28, 38, 45, 42, 41, 41, 36, 34, 32, 31, 30, 28, 29, 33, 34, 37, 44, 42, 37, 41, 39, 41, 38, 43, 40, 39, 39, 46, 45, 47, 54, 51, 45, 44, 43, 39, 42, 42, 39, 43, 43, ...
[ "base", "easy", "nonn" ]
A001484
[ 1, -6, 15, -20, 9, 24, -65, 90, -75, 6, 90, -180, 220, -180, 66, 110, -264, 360, -365, 264, -66, -178, 375, -510, 496, -414, 180, 60, -330, 570, -622, 582, -390, 220, 96, -300, 621, -630, 705, -492, 300, 0, -235, 420, -570, 59...
[ "sign" ]
A207319
[ 0, 0, -2, 18, -150, 1234, -10026, 81078, -653642, 5259654, -42268734, 339383866, -2723191254, 21839901546, -175088593334, 1403249333706, -11243655022134, 90073138966378, -721461395853162, 5777933202466686, -46268213346433300, 370468327360598600, -2966084621457856000, 23...
[ "sign" ]
A200966
[ 1, 2, 4, 9, 24, 68, 204, 642, 2096, 7026, 24026, 83454, 293562, 1043488, 3741954, 13520253, 49171485, 179859763, 661240417, 2442023860, 9055315765, 33701442548, 125845246605, 471346884115, 1770306347204, 6665954191204, 25159152509961 ]
[ "nonn" ]
A063199
[ 1, 2, 4, 6, 8, 8, 12, 12, 14, 16, 18, 18, 22, 22, 24, 26, 28, 28, 32, 32, 34, 36, 38, 38, 42, 42, 44, 46, 48, 48, 52, 52, 54, 56, 58, 58, 62, 62, 64, 66, 68, 68, 72, 72, 74, 76, 78, 78, 82, 82 ]
[ "nonn" ]
A245860
[ 1, 0, 0, 0, 0, 0, 0, 3432, 12870, 22880, 38896, 63648, 100776, 155040, 399305520, 3292693008, 17879790324, 70676513424, 242216077400, 762341522800, 2264840592300, 478970960616720, 6869326015894680, 61426122596911800, 435982960069722000, 2589856033041531000 ]
[ "nonn" ]
A240969
[ 4, 3, 8, 9, 2, 5, 3, 6, 9, 2, 5, 9, 4, 6, 6, 4, 5, 6, 7, 4, 0, 8, 8, 5, 2, 6, 1, 1, 5, 8, 5, 2, 3, 7, 7, 4, 2, 1, 9, 1, 4, 9, 3, 8, 6, 5, 1, 4, 3, 8, 8, 7, 2, 6, 8, 3, 0, 1, 0, 7, 5, 9, 7, 5...
[ "nonn", "cons" ]
A093401
[ 29, 229, 22229, 22222222222229 ]
[ "nonn" ]
A282933
[ 1, 2, 2, 2, 3, 4, 2, 1, 4, 5, 3, 2, 3, 3, 1, 1, 5, 6, 4, 4, 6, 5, 1, 3, 8, 7, 6, 4, 5, 6, 2, 2, 6, 7, 5, 6, 7, 4, 1, 4, 9, 7, 5, 2, 7, 6, 1, 2, 5, 8, 7, 8, 6, 8, 5, 3, 8, 6, 4, 2, 6, 6, 2, 2...
[ "nonn" ]
A229437
[ 7, 43, 43, 259, 1213, 259, 1555, 31111, 31111, 1555, 9331, 775213, 2985887, 775213, 9331, 55987, 19122559, 262875231, 262875231, 19122559, 55987, 335923, 469959685, 22257074415, 74760946845, 22257074415, 469959685, 335923, 2015539 ]
[ "nonn", "tabl" ]
A157716
[ 0, 15, 17, 62, 66, 141, 147, 252, 260, 395, 405, 570, 582, 777, 791, 1016, 1032, 1287, 1305, 1590, 1610, 1925, 1947, 2292, 2316, 2691, 2717, 3122, 3150, 3585, 3615, 4080, 4112, 4607, 4641, 5166, 5202, 5757, 5795, 6380, 6420, 7035, 7...
[ "nonn", "easy" ]
A274881
[ 1, 1, 0, 2, 0, 6, 0, 3, 3, 0, 18, 12, 0, 4, 12, 4, 0, 40, 80, 20, 0, 5, 40, 20, 5, 0, 75, 375, 150, 30, 0, 6, 120, 90, 30, 6, 0, 126, 1470, 882, 252, 42, 0, 7, 350, 371, 147, 42, 7, 0, 196, 5292, 4508, 1568, ...
[ "nonn", "tabf" ]
A073758
[ 0, 0, 0, 0, 0, 4, 0, 6, 6, 4, 0, 8, 0, 4, 6, 6, 0, 4, 0, 6, 6, 4, 0, 9, 10, 4, 6, 6, 0, 4, 0, 6, 6, 4, 10, 8, 0, 4, 6, 6, 0, 4, 0, 6, 6, 4, 0, 9, 14, 4, 6, 6, 0, 4, 10, 6, 6, 4, 0, 8, 0, 4, 6,...
[ "nonn" ]
A129705
[ 0, 1, 0, 2, 1, -1, 4, 3, 1, -2, 7, 6, 4, 1, -3, 12, 11, 9, 6, 2, -3, 20, 19, 17, 14, 10, 5, -1, 33, 32, 30, 27, 23, 18, 12, 5, 54, 53, 51, 48, 44, 39, 33, 26, 18, 88, 87, 85, 82, 78, 73, 67, 60, 52, 43, 143...
[ "tabl", "easy", "sign" ]
A013291
[ 1, 0, 0, 0, 3, -40, 250, -1008, 6517, -87120, 981924, -9387840, 103808727, -1434810936, 20930063102, -308368386480, 4838631496873, -82524970065824, 1497919608463368, -28494789851849470, 568078461069883800 ]
[ "sign" ]
A288155
[ 0, 1, 5, 7, 11, 13, 17, 19, 23, 25, 41, 67, 71, 101, 109, 151, 163, 181, 233, 241, 265, 355, 433, 563, 767, 997, 1465, 1681, 1861, 1913, 2411, 2539, 2777, 13433, 22355, 30895, 44605 ]
[ "nonn", "more" ]
A007651
[ 1, 11, 12, 1121, 122111, 112213, 12221131, 1123123111, 12213111213113, 11221131132111310000, 1.2221231123121133e+25, 1.123112131122131e+33, 1.2213112211131122e+45 ]
[ "nonn", "base", "easy", "nice" ]
A285004
[ 3, 93, 273, 684, 3993, 58695, 91355, 167055, 441519, 2337513, 20225991, 20625997, 148789675, 470944675, 494359089, 3252701700, 3472027000, 9096968436 ]
[ "nonn", "more" ]
A136763
[ 1, 1, 2, 6, 1, 9, 4, 2, 1, 12, 9, 8, 7, 7, 8, 9, 11, 1, 1, 2, 3, 5, 9, 1, 2, 4, 9, 1, 3, 7, 1, 3, 7, 1, 3, 10, 2, 6, 1, 4, 1, 3, 10, 2, 9, 2, 8, 2, 8, 2, 9, 2, 11, 3, 1, 4, 1, 7, 2, 11, 4, 1, ...
[ "nonn", "easy", "base" ]
A230285
[ 1, 7, 28, 61, 144, 233, 396, 517, 724, 1061, 1366, 1847, 2286, 2631, 3118, 3803, 4650, 5033, 6222, 6989, 7634, 8743, 9830, 10975, 12628, 14121, 15098, 16329, 17262, 18397, 21852, 23517, 25372, 26959, 29916, 31421, 33846, 36583, 38482, 410...
[ "nonn" ]
A151837
[ 1, 1, 3, 1, 3, 3, 7, 1, 3, 3, 7, 5, 7, 9, 17, 1, 3, 3, 7, 5, 7, 9, 17, 9, 7, 9, 17, 17, 19, 25, 43, 3, 7, 3, 7, 5, 7, 9, 17, 9, 7, 9, 17, 17, 19, 25, 43, 19, 7, 9, 17, 17, 19, 25, 43, 35, 23, 25, 43, ...
[ "nonn" ]
A033371
[ 51, 25, 17, 12, 10, 8, 7, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0...
[ "easy", "nonn" ]
A303433
[ 2, 1212222, 22, 12222, 21212222, 1212122122212222, 222, 1221212122122212000, 212222, 12122122212222, 221212222, 122212222, 21212122122212224, 12121212222212222, 2222, 122122212222, 21221212122122210000, 12122212122122211000, 2212222, 1222222, 212122122212222 ]
[ "nonn" ]
A243290
[ 0, 1, 2, 3, 2, 4, 3, 5, 6, 4, 3, 7, 8, 4, 5, 9, 6, 10, 3, 11, 5, 7, 4, 12, 8, 6, 13, 4, 14, 9, 15, 7, 16, 5, 8, 10, 17, 18, 11, 6, 5, 19, 9, 4, 20, 21, 12, 5, 6, 22, 13, 23, 7, 14, 10, 24, 6, 11, 15, ...
[ "nonn" ]
A244755
[ 1, 3, 13, 87, 985, 19563, 697573, 44195007, 4985202865, 987432857043, 344306650353853, 209169206074748960, 222262777197258900000, 4.0990775337158e+23, 1.317924525238881e+27, 7.341603216747344e+30, 7.117684150252949e+34 ]
[ "nonn" ]
A017078
[ 1, 81, 289, 625, 1089, 1681, 2401, 3249, 4225, 5329, 6561, 7921, 9409, 11025, 12769, 14641, 16641, 18769, 21025, 23409, 25921, 28561, 31329, 34225, 37249, 40401, 43681, 47089, 50625, 54289, 58081 ]
[ "nonn", "easy" ]
A152547
[ 1, 2, 3, 1, 4, 2, 2, 5, 3, 3, 3, 1, 1, 6, 4, 4, 4, 4, 2, 2, 2, 2, 2, 7, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 8, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4...
[ "nonn", "tabf" ]
A253695
[ 680, 540, 618, 992, 1632, 2386, 4180, 6552, 10696, 18236, 28352, 47594, 80548, 128248, 216740, 356714, 584026, 981652, 1609356, 2663806, 4459244, 7313942, 12171062, 20237510, 33418882, 55628622, 92193244, 152691570, 254244632 ]
[ "nonn" ]
A132533
[ 2, 3, 27, 1976, 5066295, 30938196963071, 1.0462816659805488e+27, 2.6940454160330014e+54 ]
[ "frac", "nonn" ]
A110480
[ 2, 3, 7, 17, 23, 47, 53, 77, 133, 143, 157, 173, 193, 203, 217, 233, 247, 343, 347, 353, 373, 383, 427, 443, 457, 493, 527, 577, 583, 707, 767, 817, 823, 847, 857, 893, 907, 973, 1003, 1067, 1117, 1127, 1153, 1193, 1207, 1223,...
[ "nonn" ]
A379811
[ 7, 23, 47, 79, 123, 223, 325, 364, 630, 910, 1034, 1310, 1610, 1857, 2219, 2819, 3378, 3979, 4499, 4773, 5057, 5790, 6899, 7581, 9226, 9429, 10225, 11459, 12329, 12781, 15890, 16910, 18506, 19887, 22211, 22514, 23738, 27231, 27899, 29602,...
[ "nonn" ]
A354845
[ 1, 3, 7, 49, 121, 2281, 5041, 134401, 907201, 13184641, 39916801, 3753509761, 6227020801, 393409336321, 7638997766401, 160474477363201, 355687428096001, 75792615407308800, 121645100408832000, 32459310892353946000, 475723576423839760000, 7.306033564948621e+21 ]
[ "nonn" ]
A096179
[ 1, 1, 2, 1, 2, 6, 1, 2, 4, 12, 1, 2, 4, 12, 60, 1, 2, 4, 6, 12, 60, 1, 2, 4, 6, 12, 60, 420, 1, 2, 4, 6, 12, 24, 120, 840, 1, 2, 4, 6, 12, 24, 72, 360, 2520, 1, 2, 4, 6, 12, 24, 60, 120, 360, 2520, 1, 2, ...
[ "nonn", "tabl" ]
A345120
[ 14926248, 16819704, 20168784, 44946000, 45580536, 54042624, 59768064, 62099136, 66203136, 67956624, 69393024, 78008832, 78716448, 79539832, 80621568, 80996544, 89354448, 90757584, 99616392, 100088568, 101352168, 101943360, 112216896, 112720896, 114306984 ]
[ "nonn" ]
A023089
[ 0, 142857, 148257, 174285, 174825, 1025748, 1028574, 1057428, 1057482, 1082574, 1085742, 1402857, 1408257, 1420857, 1425708, 1425789, 1425897, 1428057, 1428570, 1428579, 1428597, 1429785, 1429857, 1457028, 1457082, 1457829, 1458297, 1480257 ]
[ "nonn", "base" ]
A097363
[ 8, 9, 10, 12, 13, 15, 16, 18, 21, 22, 25, 27, 28, 30, 33, 36, 37, 40, 42, 43, 46, 48, 51, 55, 57, 58, 60, 61, 63, 70, 72, 75, 76, 81, 82, 85, 88, 90, 93, 96, 97, 102, 103, 105, 106, 112, 118, 120, 121, 123, 126, 12...
[ "easy", "nonn" ]
A146810
[ 1, 1, 1, 1, 3, 7, 19, 47, 187, 1053, 6641, 45779, 382213, 4162011, 56301753, 896342697, 17171206379, 405427693543, 11818746061515, 417444288436423 ]
[ "nonn" ]
A002265
[ 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 8, 9, 9, 9, 9, 10, 10, 10, 10, 11, 11, 11, 11, 12, 12, 12, 12, 13, 13, 13, 13, 14, 14, 14, 14...
[ "nonn", "easy" ]
A188185
[ 94, 289, 734, 1656, 3370, 6375, 11322, 19138, 30982, 48417, 73316, 108108, 155646, 219489, 303748, 413442, 554256, 733005, 957332, 1236222, 1579666, 1999265, 2507780, 3119876, 3851588, 4721127, 5748298, 6955424, 8366614, 10008857, 11911188, 14105854, 1...
[ "nonn" ]
A319189
[ 1, 1, 2, 3, 10, 29, 3780, 5012107 ]
[ "nonn", "more" ]
A332084
[ 0, 1, 0, 0, 2, 4, 1, 3, 2, 0, 1, 7, 3, 0, 8, 1, 9, 14, 0, 10, 2, 1, 7, 10, 0, 8, 6, 2, 3, 1, 8, 0, 9, 6, 14, 5, 10, 1, 2, 0, 3, 20, 18, 11, 5, 32, 1, 6, 0, 2, 4, 7, 13, 11, 5, 5, 1, 8, 0, 13, 4, ...
[ "nonn", "tabl" ]
A227091
[ 1, 2, 2, 4, 4, 4, 2, 8, 2, 8, 2, 8, 4, 4, 8, 8, 4, 4, 2, 16, 4, 4, 2, 16, 4, 8, 2, 8, 4, 16, 2, 8, 4, 8, 8, 8, 4, 4, 8, 32, 4, 8, 2, 8, 8, 4, 2, 16, 2, 8, 8, 16, 4, 4, 8, 16, 4, 8, 2, 32, 4, 4, ...
[ "nonn", "mult", "easy" ]
A170752
[ 1, 33, 1056, 33792, 1081344, 34603008, 1107296256, 35433480192, 1133871366144, 36283883716608, 1161084278931456, 37154696925806590, 1188950301625811000, 38046409652025950000, 1.2174851088648304e+21, 3.895952348367457e+22, 1.2467047514775863e+24 ]
[ "nonn", "easy" ]
A225000
[ 2, 4, 7, 9, 12, 14, 17, 19, 22, 24, 27, 29, 32, 34, 37, 39, 42, 44, 47, 49, 52, 54, 57, 59, 62, 64, 67, 69, 72, 74, 77, 79, 82, 84, 87, 89, 92, 94, 97, 99, 102, 104, 107, 109, 112, 114, 117, 119, 122, 124, 127, 129...
[ "dead" ]
A053221
[ 1, 5, 16, 43, 106, 249, 568, 1271, 2806, 6133, 13300, 28659, 61426, 131057, 278512, 589807, 1245166, 2621421, 5505004, 11534315, 24117226, 50331625, 104857576, 218103783, 452984806, 939524069, 1946157028, 4026531811, 8321499106 ]
[ "nonn", "easy" ]
A100096
[ 0, 1, 1, 6, 9, 36, 66, 218, 449, 1332, 2946, 8196, 18954, 50688, 120576, 314586, 761889, 1957092, 4794426, 12194828, 30093854, 76067256, 188595276, 474810276, 1180734234, 2965094536, 7387570516, 18521858088, 46203981924, 115721310552 ]
[ "nonn", "easy" ]
A324449
[ 1, 17, 352, 6722, 137225, 3013170, 70909863, 1785795023, 48031299838, 1376860759082, 41968192206641, 1356883954535010, 46416330714749290, 1675869323349039900, 63713356727612020000, 2.5449336636630253e+21, 1.0657897328450795e+23, 4.67054763965041e+24 ]
[ "nonn" ]
A274408
[ 2, 11, 13, 23, 29, 31, 17, 41, 211, 19, 53, 223, 101, 103, 227, 229, 107, 109, 233, 113, 239, 241, 251, 257, 37, 43, 59, 47, 307, 311, 127, 131, 137, 263, 269, 139, 271, 277, 149, 151, 157, 401, 409, 419, 281, 163, 167, 28...
[ "nonn", "base" ]
A102830
[ 1, 2, 3, 5, 6, 7, 10, 11, 15, 21, 22, 23, 26, 27, 31, 38, 39, 43, 47, 55, 62, 66, 70, 71, 74, 75, 79, 86, 87, 90, 91, 95, 102, 103, 107, 111, 119, 126, 130, 135, 139, 143, 151, 155, 159, 167, 171, 175, 183, 191, 203,...
[ "nonn", "easy", "base" ]
A283889
[ 10, 10001, 10002, 10003, 10004, 14, 10005, 10006, 10007, 10008, 18, 10009, 10010, 10011, 10012, 22, 10013, 10014, 10015, 10016, 26, 10017, 10018, 10019, 10020, 30, 10021, 10022, 10023, 10024, 34, 10025, 10026, 10027, 37, 10029, 10029, 39 ]
[ "nonn", "look" ]
A390082
[ 0, 0, 1, 2, 4, 10, 16, 33, 58, 107, 177, 309, 512, 855, 1396, 2213, 3464, 5443, 8311, 12684, 19149, 28407, 41965, 61222, 88912, 126832, 181455, 254583, 358776, 497709, 691913, 945065, 1300943, 1755378, 2391556, 3181281, 4291083 ]
[ "nonn" ]
A161970
[ 1, -1, -1, 0, 1, 0, -1, 0, 3, 0, -2, 0, 2, 0, -5, 0, 6, 0, -7, 0, 7, 0, -9, 0, 12, 0, -13, 0, 16, 0, -20, 0, 25, 0, -27, 0, 31, 0, -38, 0, 44, 0, -51, 0, 58, 0, -69, 0, 80, 0, -92, 0, 102, 0, -118, 0, 141...
[ "sign" ]
A326008
[ 1, 4, 14, 40, 155, 596, 2954, 14784, 83955, 494060, 3112246, 20505484, 141656697, 1020670280, 7650120170, 59509447736, 479350116043, 3990968968884, 34287091686110, 303500118414180, 2764254404207136, 25873492982703590, 248602031383697600, 2449525056696683500, 247273243...
[ "nonn" ]
A064658
[ 2, 2, 2, 2, 3, 3, 4, 3, 4, 6, 5, 8, 8, 7, 7, 9, 11, 9, 12, 12, 10, 11, 11, 13, 17, 17, 15, 14, 12, 11, 21, 21, 22, 20, 25, 22, 24, 25, 25, 26, 27, 25, 30, 27, 26, 23, 31, 38, 37, 34, 33, 34, 31, 36, 37, 38,...
[ "nonn" ]
A088243
[ 3, 4, 5, 6, 7, 7, 9, 9, 9, 10, 11, 11, 12, 13, 13, 14, 13, 14, 15, 16, 15, 15, 17, 17, 16, 19, 19, 19, 18, 19, 21, 21, 20, 22, 21, 22, 23, 23, 21, 24, 23, 24, 22, 23, 25, 26, 25, 27, 26, 27, 25, 26, 28, 27, 2...
[ "nonn" ]
A014933
[ 1, 0, 1, 0, 0, 0, -1, 0, -1, 0, 0, 0, 1, 0, 0, 0, -1, 0, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, -1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, 0, -1, 0, 0, 0, 1, 0, 0, 0, -1, 0, ...
[ "sign" ]
A249857
[ 0, 0, 0, 1, 0, 1, 2, 1, 2, 3, 0, 4, 5, 0, 5, 6, 2, 2, 8, 1, 5, 6, 3, 7, 9, 0, 9, 11, 0, 11, 13, 0, 5, 13, 1, 10, 14, 1, 6, 14, 2, 11, 15, 4, 15, 16, 2, 16, 12, 5, 16, 17, 3, 17, 18, 0, 19, 20, 0, 21...
[ "nonn" ]
A278022
[ 36, 121, 144, 289, 1764, 2304, 2601, 2809, 4225, 5184, 5329, 6241, 6889, 7056, 8100, 9409, 13225, 15625, 17689, 19881, 23409, 25281, 27225, 30276, 34969, 35721, 38025, 40401, 41616, 42849, 43681, 45369, 63001, 69696, 72361, 78961, 82369, 8468...
[ "nonn" ]
A007734
[ 1, 1, 1, 2, 4, 1, 6, 2, 1, 4, 5, 2, 3, 6, 4, 4, 16, 1, 18, 4, 6, 5, 11, 2, 20, 3, 1, 6, 28, 4, 30, 8, 5, 16, 12, 2, 18, 18, 3, 4, 8, 6, 42, 10, 4, 11, 23, 4, 42, 20, 16, 6, 52, 1, 20, 6, 18, 28, 29, ...
[ "nonn", "base" ]
A013550
[ 1, -1, 1, -55, 217, -4219, 214279, -802171, 824071, -109684277, 337533513773, -760100160121, 8320611986431, -265779449377027, 2303253020856673, -417652078505070200, 7111553692366818000, -7.396136516120375e+21 ]
[ "sign", "frac" ]
A284436
[ 1, 2, 6, 2, 18, 12, 24, 24, 792, 240, 1440, 720, 7488, 10080, 16992, 40320, 1013760, 725760, 979200, 3628800, 17902080, 79833600, 89510400, 479001600, 1988582400, 11446272000, 11931494400, 108138240000, 312309043200, 1539772416000, 2186163302400, 1987299...
[ "nonn" ]
A365214
[ 0, 1, 4, 3, 7, 5, -1, 9, 10, 12, 13, -1, 11, 14, 15, 24, 19, 25, 22, 21, -1, 23 ]
[ "sign", "base", "more" ]
A181220
[ 13, 169, 1209, 10732, 97764, 845531, 7426986, 65480503, 574725752, 5050028956, 44391722285, 390072820213, 3427866363455, 30124436697657, 264728435711181, 2326400950974628, 20444198985083330, 179661312288590300 ]
[ "nonn" ]
A239176
[ 6018, 148820, 36216324, 4845741276, 733415243746, 108383467365104, 16126266923705212, 2391741572658734000, 355190496243814600000, 5.273758074237158e+22, 7.829215010328481e+24 ]
[ "nonn" ]
A264428
[ 1, 0, 1, 0, 1, 1, 0, 2, 3, 1, 0, 5, 11, 6, 1, 0, 15, 45, 35, 10, 1, 0, 52, 205, 210, 85, 15, 1, 0, 203, 1029, 1330, 700, 175, 21, 1, 0, 877, 5635, 8946, 5845, 1890, 322, 28, 1, 0, 4140, 33387, 63917, 50358, 20055, ...
[ "nonn", "tabl", "changed" ]
A354105
[ 2, 0, 0, 1, 0, 8, 0, 3, 16, 4, 0, 12, 0, 24, 16, 7, 0, 24, 0, 6, 96, 32, 0, 20, 4, 12, 96, 36, 0, 0, 0, 15, 128, 20, 48, 44, 0, 56, 48, 10, 0, 0, 0, 48, 48, 72, 0, 36, 144, 8, 80, 18, 0, 104, 64, 60, 224,...
[ "nonn" ]
A129508
[ 0, 1, 10, 12, 27, 30, 31, 36, 37, 252, 255, 256, 280, 282, 756, 757, 760, 810, 811, 3160, 3162, 3186, 3187, 3250, 3252, 3276, 3277, 3280, 6561, 6562, 6885, 6886, 6912, 6925, 7536, 7537, 7560, 7561, 7626, 7627, 7650, 7651, 19686, 1...
[ "nonn" ]
A042559
[ 1, 2, 5, 7, 40, 47, 87, 134, 221, 3007, 3228, 6235, 9463, 15698, 87953, 103651, 295255, 694161, 39168271, 79030703, 197229677, 276260380, 1578531577, 1854791957, 3433323534, 5288115491, 8721439025, 118666822816, 127388261841, 246055084657, 373443346498 ]
[ "nonn", "frac", "easy" ]
A342451
[ 88, 189, 157, 3168, 6272, 236288, 587264, 2604717, 48833536, 293001216, 854822912, 12207734784, 8392914944, 183106404352, 1296997711872, 15258814251008, 2997264777216, 79472920887296, 556310058762240, 5960466160418816, 25033957873549310, 46938659244998660, 309944160840423...
[ "nonn", "frac" ]
A373194
[ 1, 2, 3, 4, 5, 6, 8, 10, 12, 19, 27, 38, 54, 2049, 2732, 4098, 5779, 11558, 36717, 48956, 73434, 21994424093409, 29325898791212, 43988848186818, 4.398945023041934e+29, 5.865260030722578e+29, 8.797890046083867e+29, 5.657047804679503e+40, 5.657047804679503e+40 ]
[ "nonn" ]
A167732
[ 27, 1331, 4913, 9261, 12167, 35937, 2924207, 8869743, 12649337, 14348907, 19465109, 23639903, 25153757, 30080231, 34965783, 36926037, 41781923, 43986977, 55306341 ]
[ "base", "nonn" ]
A257811
[ 1, 8, 3, 10, 5, 12, 7, 2, 9, 4, 11, 6, 1, 8, 3, 10, 5, 12, 7, 2, 9, 4, 11, 6, 1, 8, 3, 10, 5, 12, 7, 2, 9, 4, 11, 6, 1, 8, 3, 10, 5, 12, 7, 2, 9, 4, 11, 6, 1, 8, 3, 10, 5, 12, 7, 2, 9, 4, 11, 6, 1...
[ "nonn", "easy" ]
A001440
[ 1, 1, 1, 1, 2, 5, 10, 9, 10, 14, 18, 17, 25, 23, 31, 20, 19, 10, 6, 4, 8, 5, 10, 0, 2, 2, 7, 0, 5, 4, 0, 0 ]
[ "nonn", "hard", "more" ]
A001229
[ 1, 2, 8, 12, 128, 240, 720, 6912, 32768, 142560, 712800, 1140480, 1190400, 3345408, 3571200, 5702400, 14859936, 29719872, 50319360, 118879488, 2147483648, 3889036800, 4389396480, 21946982400, 47416320000, 92177326080, 133145026560, 331914240000, 460886630400, ...
[ "nonn" ]
A006296
[ 70, 1720, 24164, 256116, 2278660, 17970784, 129726760, 875029804, 5593305476, 34225196720, 201976335288, 1156128848680, 6447533938280, 35155923872640, 187959014565840, 987658610225052, 5110652802256260, 26084524995672080, 131501187454625570, 655590388845975000, 32354633767714...
[ "nonn" ]
A170885
[ 0, 3, 4, 8, 12, 12, 12, 16, 32, 56, 68, 40, 20, 16, 32, 56, 80, 88, 104, 152, 256, 376, 388, 164, 64, 24, 40, 56, 80, 88, 104, 152, 256, 376, 424, 296, 256, 272, 416, 552 ]
[ "nonn", "more" ]
A379393
[ 1, 6, 72, 277, 1910, 8657, 27442, 97132, 295752, 967914, 2922814 ]
[ "nonn", "more" ]
A012631
[ 1, 0, 12, -360, 20048, -1794240, 235532352, -42633182592, 10177055117568, -3097788814190592, 1171100833288338400, -538330446029312160000, 2.957030611866233e+23, -1.9128994765238375e+26 ]
[ "sign" ]
A246826
[ 0, 10, 26, 30, 36, 136, 156, 433 ]
[ "nonn" ]
A181495
[ 1, 2, 4, 10, 12, 32, 36, 572, 1991, 20857, 27432, 28763, 155122, 190271, 288108, 484709, 1395499, 9370521, 12918396, 22646948, 49496125, 73469408, 172128260, 645676547 ]
[ "nonn", "more" ]
A029200
[ 1, 0, 1, 0, 1, 1, 1, 2, 1, 3, 2, 3, 3, 3, 5, 4, 6, 5, 7, 7, 8, 9, 9, 11, 11, 13, 13, 15, 16, 17, 19, 19, 22, 22, 25, 26, 28, 30, 31, 34, 35, 38, 40, 42, 45, 47, 50, 52, 55, 58, 61, 64, 67, 70, 74, 77, 81,...
[ "nonn", "easy" ]
A191946
[ 1, 1, 1, 22, 22620 ]
[ "nonn", "more" ]
A019816
[ 1, 2, 1, 8, 6, 9, 3, 4, 3, 4, 0, 5, 1, 4, 7, 4, 8, 1, 1, 1, 2, 8, 9, 3, 9, 1, 9, 2, 3, 1, 5, 2, 5, 1, 7, 6, 0, 1, 3, 2, 3, 5, 6, 4, 6, 4, 7, 1, 4, 6, 8, 7, 2, 0, 9, 2, 7, 0, 4, 8, 8, 7, 3, 9...
[ "nonn", "cons" ]