id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A057091
[ 1, 8, 72, 640, 5696, 50688, 451072, 4014080, 35721216, 317882368, 2828828672, 25173688320, 224020135936, 1993550594048, 17740565839872, 157872931471360, 1404907978489856, 12502247279689728, 111257242065436670, 990075914761011200, 8810665254611583000 ]
[ "nonn", "easy" ]
A027299
[ 1, 3, 8, 20, 32, 79, 128, 312, 512, 1234, 2048, 4888, 8192, 19387, 32768, 76976, 131072, 305902, 524288, 1216536, 2097152, 4840950, 8388608, 19273360, 33554432, 76766564, 134217728, 305877616, 536870912, 1219164499, 2147483648 ]
[ "nonn" ]
A294484
[ 1, 2, 3, 6, 7, 8, 10, 12, 13, 21, 46, 68, 91, 153, 366, 1112, 1185, 1222, 7161, 20077, 33435, 40747, 99133, 108300, 136716 ]
[ "nonn", "more", "hard" ]
A235926
[ 168, 1788, 18992, 201976, 2146656, 22822704, 242602688, 2579082208, 27416534400, 291455295168, 3098309729024, 32936787698560, 350135170930176, 3722127720923904, 39568195366759420, 420631235622297100 ]
[ "nonn" ]
A212779
[ 99, 546, 3010, 16594, 91482, 504337, 2780392, 15328203, 84503842, 465866699, 2568306672, 14158984054, 78057979457, 430330886291, 2372398990909, 13078951921338, 72103800421506, 397505707375713, 2191434937861300 ]
[ "nonn" ]
A374646
[ 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 0, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 1, 0, 1, 1...
[ "nonn", "easy" ]
A113089
[ 1, 2, 10, 114, 2970, 182402, 27392682, 10390564242, 10210795262650, 26494519967902110, 184142934938620230000, 3.466516611360924e+24, 1.7834655966706013e+29, 2.5264074391478557e+34 ]
[ "nonn" ]
A288306
[ 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 1, 0, 0, 0, 1, 0, 1, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 1, 0, 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 1, 0, 0, 0, 1, 0, 1, 1, 0, 1, 1, 0, 0...
[ "nonn", "easy" ]
A174822
[ 11, 71, 239, 599, 1259, 2351, 14519, 38219, 83231, 104651, 129959, 279311, 389999, 530711, 1047551, 1678319, 2824079, 3416951, 8500139, 12956399, 17846399, 22662359, 26868671, 35147111, 40953599, 45205451, 47451431, 57282191, 59961791 ]
[ "nonn" ]
A370905
[ 1, 2, 4, 7, 11, 13, 19, 24, 31, 35, 45, 51, 63, 69, 77, 88, 104, 111, 129, 141, 153, 163, 185, 195, 216, 228, 248, 266, 294, 302, 332, 353, 373, 389, 413, 434, 470, 488, 512, 532, 572, 584, 626, 656, 684, 706, 752, 774, ...
[ "nonn", "easy" ]
A299658
[ 16, 512, 11888, 297071, 7411398, 185302633, 4634931975, 115940148451, 2900256951630, 72550765755149, 1814880621999624, 45399839444130820, 1135692126141775200, 28409717970065457000, 710678591596437000000 ]
[ "nonn" ]
A225859
[ 1, 2, 3, 4, 6, 7, 8, 9, 11, 12, 13, 14, 16, 17, 18, 19, 24, 25, 27, 28, 29, 31, 33, 34, 36, 37, 38, 39, 41, 42, 43, 44, 49, 51, 52, 54, 56, 57, 58, 59, 61, 62, 63, 64, 66, 67, 68, 69, 76 ]
[ "nonn", "more" ]
A044088
[ 11, 36, 55, 61, 86, 111, 136, 161, 180, 186, 211, 236, 261, 275, 305, 311, 336, 361, 386, 411, 430, 436, 461, 486, 511, 536, 555, 561, 586, 611, 636, 661, 680, 686, 711, 736, 761, 786, 805, 811, 836, 861, 886, 900, 930, 936, ...
[ "nonn", "base" ]
A275731
[ 0, 0, 0, 2, 1, 0, 2, 0, 1, 0, 4, 1, 2, 1, 0, 4, 0, 3, 2, 1, 0, 6, 1, 4, 3, 2, 1, 0, 6, 6, 5, 4, 3, 2, 1, 0, 8, 7, 0, 5, 4, 3, 2, 1, 0, 8, 6, 1, 6, 5, 4, 3, 2, 1, 0, 10, 7, 2, 7, 6, 5, 4, 3, ...
[ "nonn", "tabl" ]
A273220
[ 9, 37, 81, 141, 217, 309, 417, 541, 681, 837, 1009, 1197, 1401, 1621, 1857, 2109, 2377, 2661, 2961, 3277, 3609, 3957, 4321, 4701, 5097, 5509, 5937, 6381, 6841, 7317, 7809, 8317, 8841, 9381, 9937, 10509, 11097, 11701, 12321, 12957, 13609...
[ "nonn", "easy" ]
A074956
[ 2, 1, 12, 1, 1, 6, 1, 136, 11, 1, 1, 4, 1, 5, 2, 9, 1, 2, 1, 4, 3, 2, 4, 2, 3, 2, 1, 46, 7, 1, 6, 2, 1, 3, 14, 4, 6, 8, 6, 3, 1, 2, 1, 6, 1, 2, 1, 3, 2, 1, 1, 1, 1, 1, 7, 1, 1, 6, 1, 3, 9, 10, ...
[ "nonn", "cofr" ]
A179608
[ 1, 3, 10, 24, 64, 144, 352, 768, 1792, 3840, 8704, 18432, 40960, 86016, 188416, 393216, 851968, 1769472, 3801088, 7864320, 16777216, 34603008, 73400320, 150994944, 318767104, 654311424, 1375731712, 2818572288, 5905580032 ]
[ "easy", "nonn" ]
A200798
[ 51, 40148, 34679839, 30147154218, 26207146328784, 22781978610167988, 19804473216531796000, 1.721611468481507e+22, 1.4966043352402318e+25, 1.3010046560219624e+28, 1.1309690043874237e+31 ]
[ "nonn" ]
A122569
[ 1, 1, 9, 105, 38505, 1771476585, 10838310072981297000, 1.4035083481314418e+38, 6.803317496776984e+76 ]
[ "nonn", "base" ]
A331998
[ 1, 1, 3, 1, 13, 16, 1, 39, 171, 125, 1, 101, 1091, 2551, 1296, 1, 243, 5498, 28838, 43653, 16807, 1, 561, 24270, 243790, 780585, 850809, 262144, 1, 1263, 98661, 1733035, 10073955, 22278189, 18689527, 4782969, 1, 2797, 379693, 10996369, ...
[ "nonn", "tabl" ]
A209090
[ 3361, 11296321, 28698007940, 71929610916133, 180986678798076800, 455585601029801250000, 1.146755797140484e+24, 2.8864701853397914e+27, 7.265468650533511e+30 ]
[ "nonn" ]
A272439
[ 3, 1, 4, 7, 8, 12, 39, 30, 48, 140, 168, 200, 576, 522, 1128, 2688, 2208, 3572, 12960, 9350, 17296, 44520, 54208, 64680, 158976, 186048, 361928, 809200, 826728, 1169400, 4131036, 3010350, 4876416, 13862800, 17256768, 23639040, 59720832, 54018...
[ "nonn" ]
A204828
[ 120, 180, 240, 360, 420, 480, 504, 540, 600, 660, 672, 720, 780, 840, 900, 960, 1008, 1080, 1200, 1260, 1320, 1344, 1440, 1512, 1560, 1584, 1620, 1680, 1800, 1848, 1872, 1890, 1920, 1980, 2016, 2040, 2100, 2160, 2184, 2280, 2340, 2352...
[ "nonn", "changed" ]
A372369
[ 1, 2, 12, 65, 388, 2352, 14565, 91289, 577764, 3683459, 23621462, 152203482, 984598741, 6390596591, 41596873869, 271424778015, 1774892605284, 11628321367815, 76311803660025, 501554760288813, 3300889231760238, 21750690436059188, 143481522241226960 ]
[ "nonn" ]
A029462
[ 1, 17, 256, 289, 809, 1792, 2329, 4352, 4913, 7055, 8704, 13285, 24565, 39509, 43520, 58880, 83521, 95744, 147968, 175616, 197120, 250563, 304640, 478720, 548029, 670208, 739840, 751689, 1000960, 1035776, 1192448, 1379840, 1419857, 1474816, 1553664...
[ "nonn", "base" ]
A266783
[ 1, 5, 14, 30, 55, 91, 140, 204, 285, 385, 506, 651, 823, 1024, 1256, 1521, 1821, 2158, 2534, 2952, 3415, 3925, 4485, 5098, 5766, 6491, 7275, 8120, 9028, 10002, 11046, 12162, 13351, 14616, 15960, 17385, 18893, 20486, 22167, 23939, 25805,...
[ "nonn" ]
A260388
[ 2, 5, 7, 13, 17, 29, 53, 89, 199, 271, 349, 823, 1747, 2251, 2593, 6569, 7121, 27479, 44129, 85361, 115259, 254731, 462103, 903751 ]
[ "nonn", "hard", "more" ]
A150285
[ 1, 2, 6, 23, 91, 388, 1694, 7580, 34503, 158934, 740085, 3472317, 16403905, 77905795, 371712658, 1780389419, 8555917907, 41234933337, 199226988229, 964687115736, 4680221420684, 22745569097665, 110712610892370, 539635195986892, 2633586470388434, 12867337964191294, ...
[ "nonn", "walk" ]
A042968
[ 1, 2, 3, 5, 6, 7, 9, 10, 11, 13, 14, 15, 17, 18, 19, 21, 22, 23, 25, 26, 27, 29, 30, 31, 33, 34, 35, 37, 38, 39, 41, 42, 43, 45, 46, 47, 49, 50, 51, 53, 54, 55, 57, 58, 59, 61, 62, 63, 65, 66, 67, 69, 70, 71, ...
[ "nonn", "easy" ]
A311659
[ 1, 4, 8, 12, 20, 26, 26, 32, 38, 44, 46, 52, 58, 66, 62, 70, 76, 82, 82, 92, 98, 104, 98, 110, 114, 120, 116, 132, 138, 144, 132, 150, 154, 158, 150, 170, 178, 184, 168, 188, 194, 198, 184, 208, 216, 224, 204, 228, 232, ...
[ "nonn" ]
A064465
[ 5, 7, 13, 16, 19, 31, 36, 40, 41, 43, 49, 50, 53, 61, 74, 82, 84, 89, 92, 94, 102, 103, 107, 109, 113, 130, 138, 140, 149, 151, 154, 158, 169, 181, 182, 197, 199, 217, 229, 233, 239, 241, 243, 257, 266, 271, 293, 331, 34...
[ "easy", "nonn" ]
A225011
[ 5, 25, 95, 295, 791, 1897, 4166, 8518, 16414, 30086, 52834, 89402, 146446, 233108, 361711, 548591, 815083, 1188679, 1704377, 2406241, 3349193, 4601059, 6244892, 8381596, 11132876, 14644540, 19090180, 24675260, 31641640, 40272566, 50898157 ]
[ "nonn" ]
A291851
[ 4, 128, 972, 1089, 4096, 12500, 31104, 34848, 59536, 67228, 75625, 131072, 236196, 264627, 400000, 644204, 995328, 1050625, 1115136, 1485172, 1605289, 1905152, 2151296, 2420000, 3037500, 3403125, 4194304, 5679428, 7558272, 8468064, 9771876, 9904396, 99...
[ "nonn" ]
A342050
[ 2, 4, 8, 10, 14, 16, 20, 22, 26, 28, 30, 32, 34, 38, 40, 44, 46, 50, 52, 56, 58, 60, 62, 64, 68, 70, 74, 76, 80, 82, 86, 88, 90, 92, 94, 98, 100, 104, 106, 110, 112, 116, 118, 120, 122, 124, 128, 130, 134, 136, 140, ...
[ "nonn", "base" ]
A217878
[ 3, 9, 22, 46, 91, 183, 383, 819, 1749, 3699, 7772, 16316, 34325, 72349, 152573, 321621, 677623, 1427389, 3006930, 6335210, 13348399, 28125235, 59258363, 124851495, 263048937, 554220135, 1167698552, 2460253944, 5183565225, 10921353721 ]
[ "nonn" ]
A243885
[ 7, 11, 11, 971, 71394923, 959316767, 13342820302307 ]
[ "nonn", "hard", "more" ]
A166507
[ 0, 10, 1023, 2676, 16867, 111688, 1522828, 11386882, 112273999, 1212143716, 11232152998, 121321194596 ]
[ "base", "hard", "more", "nonn" ]
A263388
[ 36, 17376, 2205225, 188020096, 24782315776, 3447945608640, 431369679452481, 52701991071361200, 6659057448461742000, 847742465861422800000, 1.0679257789707187e+23, 1.3418361811042158e+25 ]
[ "nonn" ]
A075883
[ 1, 1, 2, 3, 5, 11, 131, 39916931 ]
[ "nonn" ]
A322773
[ 5, 18, 70, 299, 1393, 7023, 38043, 220054, 1352082, 8784991, 60125371, 432001747, 3248914361, 25508188118, 208592396802, 1772921926183, 15632838989393, 142759592985079, 1348095912827295, 13145321614286610, 132188675368994450, 1369216940917868500 ]
[ "nonn" ]
A378049
[ 1, 5, 19, 59, 121, 1843, 6233, 57637, 84019, 183023 ]
[ "nonn", "more" ]
A142680
[ 139, 367, 709, 823, 937, 1051, 1279, 1621, 2647, 3217, 3331, 3559, 3673, 4129, 4243, 4357, 4813, 5839, 5953, 6067, 6637, 7207, 7321, 7549, 8233, 8461, 8689, 8803, 9601, 9829, 10399, 10513, 10627, 11083, 11197, 11311, 12109, 12451, 12907, ...
[ "nonn", "easy" ]
A083030
[ 0, 4, 7, 12, 16, 19, 24, 28, 31, 36, 40, 43, 48, 52, 55, 60, 64, 67, 72, 76, 79, 84, 88, 91, 96, 100, 103, 108, 112, 115, 120, 124, 127, 132, 136, 139, 144, 148, 151, 156, 160, 163, 168, 172, 175, 180, 184, 187, 192, 1...
[ "nonn", "easy" ]
A266533
[ 1, 3, 3, 9, 3, 9, 9, 21, 3, 9, 9, 21, 9, 21, 21, 45, 3, 9, 9, 21, 9, 21, 21, 45, 9, 21, 21, 45, 21, 45, 45, 93, 3, 9, 9, 21, 9, 21, 21, 45, 9, 21, 21, 45, 21, 45, 45, 93, 9, 21, 21, 45, 21, 45, 45, 93, 21...
[ "nonn", "tabf" ]
A035134
[ 6, 22, 33, 55, 66, 77, 111, 141, 161, 202, 222, 262, 282, 303, 323, 393, 434, 454, 474, 494, 505, 515, 535, 545, 555, 565, 595, 606, 626, 646, 707, 717, 737, 767, 777, 818, 838, 858, 878, 898, 939, 949, 959, 969, 979, 989, 1...
[ "nonn", "base" ]
A109412
[ 4, 9, 10, 21, 22, 39, 49, 62, 69, 74, 93, 94, 95, 106, 111, 115, 146, 159, 203, 218, 219, 247, 254, 259, 295, 309, 319, 326, 327, 346, 355, 358, 394, 395, 398, 403, 427, 445, 446, 447, 451, 454, 551, 581, 586, 611, 622, 62...
[ "nonn" ]
A238303
[ 1, 1, 2, 1, 2, 2, 1, 2, 2, 2, 1, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2...
[ "easy", "nonn", "tabl" ]
A058919
[ 1, 1, 5, 25, 85, 221, 481, 925, 1625, 2665, 4141, 6161, 8845, 12325, 16745, 22261, 29041, 37265, 47125, 58825, 72581, 88621, 107185, 128525, 152905, 180601, 211901, 247105, 286525, 330485, 379321, 433381, 493025, 558625, 630565, 709241, 795061,...
[ "nonn", "easy" ]
A251236
[ 38, 110, 110, 322, 270, 322, 966, 694, 694, 966, 2930, 1870, 1592, 1870, 2930, 8982, 5194, 3886, 3886, 5194, 8982, 27714, 14786, 9914, 8686, 9914, 14786, 27714, 85958, 42850, 26224, 20490, 20490, 26224, 42850, 85958, 267602, 125934, 71322, ...
[ "nonn", "tabl" ]
A377561
[ 8, 13, 62, 78, 113, 125, 132, 157, 207, 230, 315, 337, 428, 473, 493, 570, 652, 763, 788, 902, 928, 932, 987, 1075, 1113, 1135, 1147, 1158, 1225, 1245, 1322, 1327, 1387, 1432, 1483, 1602, 1607, 1672, 1702, 1753, 1767, 1845, 1880, ...
[ "nonn" ]
A357229
[ 1, -1, -9, -555, 7665, -1777545, 114147495, -27004972995, 20805419059425, -4204053743915025, 1822343877322543600, -505299954078654800000, 7.865722024484384e+23, -3.0414370837457368e+26, 2.9788851615052314e+29, -3.7995745664705184e+32 ]
[ "sign" ]
A355377
[ 119, 1236, 11359, 11449, 122669, 2334699, 13346899 ]
[ "nonn", "base", "fini", "full" ]
A171951
[ 3, 9, 51, 97, 133, 146, 160, 172, 191, 206, 240, 261, 273, 313, 342, 362, 396, 415, 440, 470, 483, 502, 516, 536, 565, 593, 615, 640, 660, 677, 693, 724, 750, 784, 796, 807, 832, 853, 902, 949, 963, 985, 1009, 1038, 1052, 1073...
[ "nonn" ]
A363082
[ 12, 18, 20, 24, 28, 44, 52, 60, 68, 76, 84, 90, 92, 116, 120, 124, 126, 132, 140, 148, 150, 156, 164, 168, 172, 180, 188, 198, 204, 212, 220, 228, 234, 236, 244, 260, 264, 268, 276, 284, 292, 306, 308, 312, 316, 332, 340, ...
[ "nonn" ]
A136394
[ 1, 1, 1, 1, 1, 5, 1, 20, 3, 1, 84, 35, 1, 409, 295, 15, 1, 2365, 2359, 315, 1, 16064, 19670, 4480, 105, 1, 125664, 177078, 56672, 3465, 1, 1112073, 1738326, 703430, 74025, 945, 1, 10976173, 18607446, 8941790, 1346345, 45045, 1, 11...
[ "easy", "nonn", "tabf", "look" ]
A272633
[ 0, 1, 2, 4, 6, 7, 7, 13, 13, 13, 19, 19, 19, 23, 23, 23, 31, 31, 31, 33, 37, 37, 43, 43, 47, 49, 53, 53, 53, 55, 61, 63, 67, 73, 73, 75, 75, 79, 83, 83, 89, 89, 91, 91, 97, 103, 103, 109, 113, 113, 115, 117, 119,...
[ "nonn" ]
A264076
[ 128, 28657, 12100000, 1861931060, 448121165789, 98725402363225, 23180312098708412, 5190313095361394000, 1.1899641707578673e+21, 2.7106283874456722e+23, 6.195535386045836e+25, 1.4139394538378322e+28, 3.2288342414847446e+30 ]
[ "nonn" ]
A342638
[ 0, 1, 1, 10, 1, 19, 10, 91, 1, 28, 19, 181, 10, 181, 91, 820, 1, 37, 28, 271, 19, 352, 181, 1639, 10, 271, 181, 1720, 91, 1639, 820, 7381, 1, 46, 37, 361, 28, 523, 271, 2458, 19, 523, 352, 3349, 181, 3268, 1639, 14761, 1...
[ "nonn" ]
A120807
[ 1, 125, 357911, 28049850707778720, 1093838138707598600, 2498288375480240600, 2971816820123566000, 11368298790243740000, 14106863174732462000, 17104690428464396000, 21904077634699215000, 64352051556875936000, 82512915197756440000, 115892432166553000000, 231193025116112160000 ]
[ "nonn" ]
A000450
[ 1, 10, 50, 385, 3130, 28764, 291900, 3249210, 39367395, 515874470, 7270929806, 109691447395, 1763782644020, 30114243100760, 544123405603800, 10373304279494964, 208092476689208800, 4381794437494060000, 96635643877147890000, 2.2275625355582476e+21 ]
[ "nonn" ]
A252331
[ 20782, 19540, 68675, 214176, 1091359, 3999229, 13814611, 72653087, 271107529, 955749031, 5021999771, 18759236477, 66726088706, 352163988663, 1312830338187, 4684383863325, 24801667822603, 92386186419629, 330145724250475 ]
[ "nonn" ]
A211604
[ 1, 1, 2, 6, 26, 186, 3138, 206850, 91058098, 534571085778, 126075037515248880, 6.0620193742594e+24, 4.70527304983253e+35, 1.2850566329589887e+51 ]
[ "nonn" ]
A226618
[ 1, 5, 13, 29, 11, 61, 17, 125, 253, 509, 145, 203, 1021, 43, 2045, 55, 4093, 355, 1169, 8189, 137, 3275, 16381, 1129, 32765, 1007, 5957, 9361, 65533, 131069, 97, 52427, 262141, 643, 74897, 524285, 41, 1048573, 553, 28727, 110375, 2097...
[ "nonn", "tabf" ]
A304903
[ 3, 5, 3, 3, 5, 19, 19, 5, 3, 3, 5, 7, 3, 7, 3, 7, 5, 3, 3, 5, 31, 7, 23, 13, 31, 5, 19, 13, 11, 43, 19, 17, 3, 3, 13, 7, 31, 5, 13, 3, 11, 7, 19, 23, 3, 61, 5, 3, 7, 5, 61, 37, 5, 3, 3, 7, 19, 3, 7, ...
[ "nonn" ]
A254482
[ 1964388, 6557179, 22624962, 86663046, 191995191, 540249256, 1553637600, 4193549493, 11469180519, 30648695723, 78094397048, 199468025401, 514014239339, 1334127903704, 3511169370487, 9335744842342, 25009560981329 ]
[ "nonn" ]
A286002
[ 1, 2, 4, 5, 8, 8, 12, 12, 15, 16, 20, 18, 24, 24, 26, 27, 32, 30, 36, 34, 38, 40, 44, 40, 47, 48, 50, 50, 56, 52, 60, 58, 62, 64, 66, 63, 72, 72, 74, 72, 80, 76, 84, 82, 84, 88, 92, 86, 95, 94, 98, 98, 104, 100...
[ "nonn" ]
A105192
[ 2, 4, 4, 4, 4, 2, 2, 8, 2, 4, 16, 4, 2, 8, 4, 2, 6, 6, 4, 4, 2, 2, 8, 4, 8, 6, 4, 4, 16, 2, 4, 8, 4, 4, 10, 4, 4, 8, 4, 4, 4, 4, 2, 6, 2, 8, 12, 8, 4, 8, 2, 4, 12, 2, 2, 4, 2, 8, 8, 4, 2, 16, ...
[ "nonn", "base" ]
A159672
[ 0, 1, 1, 3, 4, 2, 13, 2, 3, 4, 1, 1, 1, 1, 2, 2, 1, 1, 1, 1, 1, 3, 1, 90, 4, 52, 5, 1, 3, 1, 1, 2, 1, 12, 2, 1, 1, 2, 2, 2, 1, 1, 3, 10, 75, 15, 1, 2, 2, 3, 1, 1, 2, 1, 1, 1, 9, 4, 9, 1, 1, 1, ...
[ "nonn" ]
A349884
[ 1, 1, 3, 12, 76, 961, 15407, 221528, 3260936, 80774113, 2462081967, 50963779604, 922244742292, 61063845514113, 2868669700179871, 2019727494212912, -47889136910252850, 461395118866593100000, 5.781219348638566e+21, -2.10873829674819e+24 ]
[ "sign" ]
A319440
[ 100, 144, 169, 196, 225, 256, 289, 324, 361, 400, 441, 529, 576, 625, 676, 729, 784, 841, 900, 961, 1024, 1156, 1225, 1296, 1369, 1444, 1521, 1600, 1681, 1764, 1849, 2025, 2116, 2209, 2304, 2401, 2500, 2601, 2704, 2809, 2916, 3136, ...
[ "nonn", "base", "easy" ]
A067828
[ 45, 105, 117, 165, 225, 273, 297, 315, 345, 357, 405, 465, 513, 525, 561, 585, 621, 693, 705, 765, 777, 825, 837, 861, 885, 945, 1005, 1113, 1125, 1155, 1185, 1197, 1281, 1305, 1365, 1395, 1425, 1485, 1521, 1545, 1575, 1593, 1617, ...
[ "nonn" ]
A255954
[ 0, 7, 127, 1518, 15800, 154410, 1470702, 13921922, 132465058, 1275540777, 12482994680, 124488408308, 1267192059423, 13179257452283, 140124528853582, 1523425278785190, 16936782395913056, 192530701636263000, 2237390160167413800, 26572938927762780000 ]
[ "nonn" ]
A317707
[ 1, 1, 2, 3, 5, 6, 11, 13, 22, 29, 46, 57, 94, 115, 180, 230, 349, 435, 671, 830, 1245, 1572, 2320, 2894, 4287, 5328, 7773, 9752, 14066, 17547, 25328, 31515, 45010, 56289, 79805, 99467, 140778, 175215, 246278, 307273, 429421, 534774, ...
[ "nonn" ]
A021328
[ 0, 0, 3, 0, 8, 6, 4, 1, 9, 7, 5, 3, 0, 8, 6, 4, 1, 9, 7, 5, 3, 0, 8, 6, 4, 1, 9, 7, 5, 3, 0, 8, 6, 4, 1, 9, 7, 5, 3, 0, 8, 6, 4, 1, 9, 7, 5, 3, 0, 8, 6, 4, 1, 9, 7, 5, 3, 0, 8, 6, 4, 1, 9, 7...
[ "nonn", "cons", "easy" ]
A283751
[ 2, 2, 2, 3, 2, 5, 3, 2, 2, 3, 5, 11, 4, 3, 2, 5, 2, 17, 3, 19, 5, 2, 11, 23, 4, 5, 3, 3, 2, 29, 6, 2, 2, 11, 3, 7, 6, 37, 19, 3, 8, 41, 2, 6, 5, 9, 23, 3, 4, 7, 5, 17, 13, 53, 3, 11, 2, 7, 29, 59, ...
[ "nonn", "base" ]
A112116
[ 1, 8, 8, 4, 8, 4, 8, 8, 4, 8, 8, 4, 4, 8, 8, 4, 4, 8, 8, 2, 4, 6, 4, 6, 2, 4, 8, 8, 2, 2, 8, 4, 8, 2, 2, 8, 8, 6, 4, 4, 6, 2, 4, 3, 8, 5, 8, 8, 7, 5, 4, 3, 4, 6, 6, 2, 1, 7, 2, 7, 8, 8, 8, 2...
[ "nonn" ]
A069205
[ 1, 3, 5, 9, 11, 15, 17, 25, 29, 33, 35, 43, 45, 49, 53, 69, 71, 79, 81, 89, 93, 97, 99, 115, 119, 123, 131, 139, 141, 149, 151, 183, 187, 191, 195, 211, 213, 217, 221, 237, 239, 247, 249, 257, 265, 269, 271, 303, 307, ...
[ "easy", "nonn" ]
A068885
[ 1, 3, 9, 13, 31, 43, 143, 167, 185, 215, 1141, 1321, 231, 763, 3277, 3517, 7289, 8009, 24787, 26587, 27847, 29431, 332021, 355781, 365681, 382841, 394721, 413201, 2949827, 3157727, 643003, 665179, 3417371, 3535181, 3616031, 3782351, 1279777, ...
[ "nonn", "frac" ]
A173898
[ 5, 1, 6, 4, 5, 4, 1, 7, 8, 9, 4, 0, 7, 8, 8, 5, 6, 5, 3, 3, 0, 4, 8, 7, 3, 4, 2, 9, 7, 1, 5, 2, 2, 8, 5, 8, 8, 1, 5, 9, 6, 8, 5, 5, 3, 4, 1, 5, 4, 1, 9, 7, 0, 1, 4, 4, 1, 9, 3, 1, 0, 6, 5, 2...
[ "cons", "nonn" ]
A281841
[ 1, 0, 101, 100, 10001, 1000, 1000101, 100100, 100000001, 11111000, 10100010101, 10010010100, 1000000010001, 111110001000, 101000101000101, 100100100100100, 10000000000000000, 1111111111111000, 1010000000000010100, 1001111111110010100, 100010000000100000000 ]
[ "nonn", "easy" ]
A343798
[ 1, 2, 4, 7, 25, 12, 16, 37, 24, 32, 33, 40, 67, 63, 48, 58, 78, 60, 81, 50, 102, 91, 114, 109, 110, 116, 117, 124, 130, 137, 120, 128, 152, 168, 190, 183, 184, 186, 215, 199, 206, 202, 259, 235, 208, 264, 261, 256, 269, ...
[ "nonn" ]
A219181
[ 1, 0, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 2, 1, 2, 2, 2, 2, 1, 2, 1, 3, 1, 3, 2, 4, 2, 4, 2, 5, 2, 1, 4, 1, 4, 1, 4, 1, 6, 2, 6, 1, 6, 2, 8, 4, 10, 2, 1, 5, 1, 6, 1, 5, 2, ...
[ "nonn", "look" ]
A312968
[ 1, 4, 9, 13, 19, 23, 26, 33, 36, 42, 43, 50, 56, 59, 62, 69, 73, 79, 77, 88, 92, 96, 97, 105, 111, 115, 112, 125, 128, 134, 131, 142, 148, 151, 148, 161, 165, 171, 165, 180, 184, 188, 183, 197, 203, 207, 200, 217, 220, ...
[ "nonn" ]
A360716
[ 0, 0, 0, 3, 45, 435, 3465, 24794, 165942, 1061730, 6578550, 39796053, 236309931, 1382504669, 7989938775, 45704622660, 259155482652, 1458298435572, 8151155034300, 45290328792695, 250308998693145, 1376766613411959, 7539656755416885, 41126122248463040, 223513887538508860...
[ "nonn", "easy" ]
A349933
[ 1, 1, 1, 1, 2, 1, 1, 6, 3, 1, 1, 20, 19, 4, 1, 1, 70, 141, 44, 5, 1, 1, 252, 1107, 580, 85, 6, 1, 1, 924, 8953, 8092, 1751, 146, 7, 1, 1, 3432, 73789, 116304, 38165, 4332, 231, 8, 1, 1, 12870, 616227, 1703636, 856945, ...
[ "nonn", "easy", "tabl" ]
A159396
[ 32, 37772, 24485600, 14192015472, 5219489405360, 1121854265726332, 132887181736133280, 8797362179502972000, 354188675085385900000, 9.513098191479224e+21, 1.839560381220047e+23 ]
[ "nonn" ]
A003065
[ 1, 1, 2, 3, 5, 9, 15, 26, 44, 78, 136, 246, 432, 772, 1382, 2481, 4490, 8170, 14866, 27128, 49544, 90371, 165432, 303475, 558275, 1028508, 1896704, 3501029, 6465774, 11947258, 22087489, 40886910, 75763102, 140588339, 261070184, 485074788, 90175...
[ "nonn", "nice", "hard" ]
A389301
[ 0, 1, 3, 8, 30, 130, 681, 4118, 28569, 223448, 1950349, 18806419, 198727385, 2285028653, 28416630601, 380185208875 ]
[ "nonn", "more" ]
A145514
[ 1, 1, 4, 23, 1086, 642457, 6188114528, 1226373476385199, 6.071277235712979e+21, 8.842676925322643e+29, 4.36239589094344e+39, 8.248872751283352e+50, 6.674388542470138e+63 ]
[ "nonn" ]
A089505
[ 1, -1, 4, 1, -24, 50, -1, 114, -950, 1350, 31, -15504, 400520, -1897200, 2052855, -9269, 19612560, -1431859000, 17333030000, -56265334125, 49236404224, 342953, -3011508588, 594221485000, -16634292228125, 123422029355625, -302409994743808, 222337901418633, -994...
[ "sign", "easy", "tabl" ]
A381840
[ 1, 1, 3, 11, 42, 153, 469, 690, -5967, -82708, -700876, -4989894, -32082336, -190742496, -1053280998, -5347579160, -24162468390, -88249158963, -157067396045, 1334548659436, 20996875910808, 194476989681546, 1491599102987040, 10232074769143770, 64440205192609150 ]
[ "sign" ]
A097727
[ 1, 101, 10301, 1050601, 107151001, 10928351501, 1114584702101, 113676711262801, 11593909964103600, 1182465139627304400, 120599850332020950000, 1.230000226872651e+22, 1.254479631559772e+24, 1.2794462241682802e+26, 1.3049097006884897e+28 ]
[ "nonn", "easy" ]
A192194
[ 0, 1, 5, 11, 31, 35, 91, 191, 211, 215, 671, 1171, 1271, 1291, 1295, 4651, 7151, 7651, 7751, 7771, 7775, 31031, 43531, 46031, 46531, 46631, 46651, 46655, 201811, 264311, 276811, 279311, 279811, 279911, 279931, 279935, 312071, 1288991, 16014...
[ "nonn" ]
A290263
[ 4, 49, 306, 728, 2021, 3556, 3740, 5236, 21360, 35244, 98210, 243252, 1096099, 1625040, 1662860, 4976785, 5080514, 11408968, 31622994, 31831002, 33587514, 33599070, 56568930, 78167976, 209645093, 218297737, 220158358, 223289647, 225150268, 238764568, 53585...
[ "nonn" ]
A331603
[ 1, 2, 3, 4, 22, 211, 5, 6, 23, 7, 8, 222, 2337, 31941, 33371313, 311123771, 7149317941, 22931219729, 112084656339, 3347911118189, 11613496501723, 97130517917327, 531832651281459, 3331113965338635300, 9, 33, 311, 10, 25, 55, 511, 773, 11, 12, 223, ...
[ "nonn", "base" ]
A027995
[ 2, 9, 36, 140, 542, 2100, 8152, 31707, 123542, 482119, 1884060, 7371715, 28874778, 113213129, 444285136, 1744931000, 6858286418, 26974115244, 106157250796, 418025117820, 1646975313678, 6492134765114, 25602897974056, 101013355547390, 398698620627842, 1574259178022460...
[ "nonn" ]
A113506
[ 1, 32, 7, 12, 17, 46, 3042, 319, 835, 2188, 5730, 375131, 39282, 102845, 269253, 704915, 46137317, 4831563, 12649196, 33116027, 86698886, 5674515856, 594243013, 1555748409, 4073002214, 10663258234, 697919312217, 73087059232 ]
[ "nonn" ]
A133130
[ 1, 2, 14, 322, 23858, 5735478, 4468252414, 11282914491066, 92343922085798830, 2.4496296006758553e+21, 2.1061891705829717e+26, 5.869474356296326e+31, 5.301587322702618e+37, 1.5520921581070494e+44 ]
[ "nonn" ]
A209554
[ 3, 97, 193, 257, 353, 449, 577, 641, 673, 769, 929, 1153, 1217, 1249, 1409, 1601, 1697, 1889, 2017, 2081, 2113, 2273, 2593, 2657, 2689, 2753, 3041, 3137, 3169, 3329, 3361, 3457, 3617, 4001, 4129, 4289, 4481, 4513, 4673, 4801, 4993, 51...
[ "nonn", "base" ]
A313786
[ 1, 5, 10, 15, 21, 26, 32, 36, 43, 46, 54, 56, 65, 66, 76, 76, 87, 86, 98, 96, 109, 106, 120, 116, 131, 126, 142, 136, 153, 146, 164, 156, 175, 166, 186, 176, 197, 186, 208, 196, 219, 206, 230, 216, 241, 226, 252, 236, 26...
[ "nonn" ]