id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A245332
[ 0, 0, 0, 0, 0, 2, 0, 3, 3, 4, 6, 9, 10, 16, 20, 27, 36, 49, 63, 86, 113, 150, 199, 265, 349, 465, 615, 815, 1080, 1432, 1895, 2513, 3328, 4409, 5841, 7739, 10250, 13581, 17990, 23832, 31571, 41824, 55403, 73396, 97228, 128800,...
[ "nonn", "easy" ]
A365339
[ 1, 2, 3, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10, 11, 12, 12, 13, 13, 13, 13, 14, 14, 14, 14, 15, 15, 16, 16, 17, 17, 17, 17, 18, 18, 19, 19, 19, 19, 20, 20, 21, 21, 21, 21, 22, 22, 22, 22, 22, 22, 23, 23, 23, ...
[ "nonn", "easy" ]
A369902
[ 1, 2, 2, 2, 4, 2, 4, 4, 6, 6, 6, 2, 8, 4, 10, 6, 12, 6, 4, 14, 4, 10, 12, 12, 4, 14, 10, 12, 6, 8, 10, 20, 8, 12, 14, 14, 6, 4, 22, 14, 20, 10, 26, 4, 10, 18, 12, 14, 20, 10, 12, 30, 12, 28, 16, 26, 22, ...
[ "nonn" ]
A217772
[ 1, 8, 113, 48469, 1232351, 1002175798, 30956114561, 32956274508457, 1386101220044940500, 50017672586399950000, 2.5481609905477194e+24, 3.694160975065766e+27, 1.4248697364867044e+29 ]
[ "nonn" ]
A200813
[ 127, 617, 3637, 98407, 121937, 296587, 519107, 744377, 1026887, 2657197, 2858927, 3292507, 4021777, 5788117, 9765617, 12856757, 14621027, 22460617, 23287307, 25001047, 27726157, 33756337, 38226857, 41827127, 45646637, 48317977, 52517287 ]
[ "nonn", "easy" ]
A208366
[ 16, 256, 1644, 9999, 67396, 422541, 2563359, 15730896, 96081144, 582174000, 3527156073, 21366154944, 129224742827, 781136134575, 4721445779732, 28529589334000, 172355128544728, 1041178745668425, 6289245172035000 ]
[ "nonn" ]
A096684
[ 5, 25, 185, 125, 1, 925, 715, 625, 61728395, 5, 5, 4625, 385, 3575, 37, 3125, 3265, 308641975, 2895, 25, 2405, 25, 23935, 23125, 2, 1925, 203909465, 17875, 189845, 185, 17905, 15625, 16835, 16325, 143, 1543209875, 15, 14475, 1295, 125, ...
[ "base", "nonn" ]
A190532
[ 64, 768, 13824, 331776, 11943936, 644972544, 54177693696, 6826389405696, 1351625102327808, 416300531516964860, 203987260443312780000, 1.5707019054135085e+23, 1.9351047474694424e+26 ]
[ "nonn" ]
A348622
[ 1, 1, 1, 1, 6, 6, 1, 28, 168, 168, 1, 120, 3360, 20160, 20160, 1, 496, 59520, 1666560, 9999360, 9999360, 1, 2016, 999936, 119992320, 3359784960, 20158709760, 20158709760, 1, 8128, 16386048, 8127479808, 975297576960, 27308332154880, 163849992929280,...
[ "nonn", "tabl" ]
A316519
[ 0, 0, 1, 1, 3, 2, 5, 4, 5, 6, 9, 6, 11, 10, 9, 10, 15, 11, 17, 12, 15, 18, 21, 16, 20, 22, 21, 20, 27, 20, 29, 24, 27, 30, 27, 25, 35, 34, 33, 28, 39, 30, 41, 36, 33, 42, 45, 35, 43, 40, 45, 44, 51, 43, 47, ...
[ "nonn" ]
A346310
[ 3, 4, 5, 6, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96...
[ "nonn", "base" ]
A083049
[ 1, 5, 15, 34, 68, 127, 225, 387, 652, 1084, 1787, 2927, 4775, 7769, 12616, 20462, 33160, 53709, 86962, 140769, 227834, 368711, 596658, 965488, 1562270, 2527887, 4090292, 6618319, 10708756, 17327225, 28036136, 45363522, 73399824, 118763517 ]
[ "nonn" ]
A379403
[ 1, 2, 5, 3, 7, 20, 4, 9, 26, 23, 6, 13, 39, 71, 48, 8, 15, 60, 93, 80, 49, 10, 25, 76, 137, 94, 89, 96, 11, 28, 79, 156, 140, 95, 204, 133, 12, 30, 92, 187, 157, 199, 241, 356, 242, 14, 32, 113, 230, 198, 236, 271,...
[ "tabl", "nonn" ]
A004745
[ 0, 1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 13, 14, 15, 16, 20, 21, 22, 23, 24, 26, 27, 28, 29, 30, 31, 32, 40, 42, 43, 44, 45, 46, 47, 48, 52, 53, 54, 55, 56, 58, 59, 60, 61, 62, 63, 64, 80, 84, 85, 86, 87, 88, 9...
[ "nonn", "base", "easy" ]
A026493
[ 1, 3, 4, 5, 6, 12, 13, 14, 22, 23, 39, 48, 55, 56, 102, 110, 119, 129, 145, 156, 164, 183, 209, 218, 259, 268, 299, 318, 345, 372, 389, 422, 430, 457, 476, 503, 511, 520, 530, 588, 615, 634, 683, 692, 709, 742, 773, 792, ...
[ "nonn" ]
A345666
[ 12, 15, 27, 110, 117, 119, 123, 129, 141, 143, 147, 153, 159, 161, 171, 183, 189, 297, 1010, 1030, 1070, 1090, 1113, 1127, 1131, 1137, 1139, 1149, 1157, 1167, 1173, 1179, 1191, 1197, 1199, 1211, 1227, 1233, 1239, 1241, 1251, 1257, 1...
[ "nonn", "base" ]
A262395
[ 1, 1, 0, 1, 0, 1, 1, 3, 2, 5, 5, 13, 13, 29, 32, 71, 81, 177, 209, 449, 538, 1148, 1415, 3002, 3736, 7862, 9930, 20877, 26648, 55756, 71767, 149860, 194507, 405332, 529708, 1101502, 1447956, 3006750, 3974959, 8242691, 10948355, 226733...
[ "nonn" ]
A235086
[ 5786, 9838, 16390, 29970, 53882, 103702, 196302, 390578, 764386, 1553646, 3106158, 6403898, 12986378, 27053230, 55429622, 116456530, 240620906, 509472502, 1060761214, 2263211058, 4748262482, 10211045710, 21595163358, 46827642938 ]
[ "nonn" ]
A051981
[ 310, 391, 415, 654, 655, 679, 955, 1038, 1146, 1166, 1267, 1282, 1346, 1391, 1578, 1662, 1739, 1833, 1858, 1895, 1902, 2183, 2195, 2198, 2407, 2526, 2553, 2615, 3227, 3278, 3374, 3497, 3565, 3611, 3755, 3818, 3918, 4043, 4069, 4087 ]
[ "nonn", "fini", "full" ]
A136722
[ 1, 1, 2, 8, 48, 336, 3584, 54592, 1422976, 66836480, 5998884352, 1030861378560, 335994532814848, 206175878632321020, 237596569295651300000, 5.144146926430002e+23, 2.0961545457901626e+27, 1.611345636111706e+31, 2.342691438918237e+35 ]
[ "easy", "nonn" ]
A369098
[ 0, 0, 0, 0, 1, 2, 6, 24, 118, 714, 5016, 40200, 362163, 3623772, 39876540, 478639080, 6223394516, 87138394540, 1307195547720, 20916564680760, 355600269756485, 6401066270800350, 121624180731849810, 2432546364331038700, 51084540451761080000, 1.1238790931375561e+21 ]
[ "nonn" ]
A260946
[ 0, 0, 0, 0, 10, 0, 15, 5, 5, 5, 0, 17, 5, 15, 5, 10, 10, 26, 10, 17, 5, 5, 5, 5, 5, 13, 15, 5, 10, 15, 15, 10, 13, 13, 5, 17, 5, 10, 5, 10, 10, 10, 25, 61, 10, 13, 17, 25, 5, 50, 15, 13, 17, 10, 15, 5, 5,...
[ "nonn" ]
A031040
[ 4, 17, 33, 49, 56, 58, 60, 62, 64, 65, 66, 68, 70, 81, 97, 113, 134, 158, 182, 206, 217, 220, 223, 226, 229, 230, 232, 235, 238, 254, 278, 302, 326, 350, 374, 398, 409, 412, 415, 418, 421, 422, 424, 427, 430, 446, 470, 494...
[ "nonn" ]
A380377
[ 1, 2, 2, 2, 3, 3, 3, 4, 4, 4, 5, 5, 5, 6, 6, 6, 6, 7, 7, 8, 8, 8, 8, 8, 9, 9, 9, 10, 10, 10, 10, 11, 12, 12, 12, 12, 12, 12, 13, 14, 14, 14, 14, 14, 14, 15, 15, 15, 15, 16, 16, 16, 17, 18, 18, 18, 18, 1...
[ "nonn" ]
A341709
[ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 84, 85, 86, 87, 88, 89, 90...
[ "nonn", "base" ]
A214661
[ 1, 3, 9, 7, 15, 25, 13, 23, 35, 49, 21, 33, 47, 63, 81, 31, 45, 61, 79, 99, 121, 43, 59, 77, 97, 119, 143, 169, 57, 75, 95, 117, 141, 167, 195, 225, 73, 93, 115, 139, 165, 193, 223, 255, 289, 91, 113, 137, 163, 191, ...
[ "nonn", "tabl" ]
A052227
[ 1, 5, 27, 156, 935, 5733, 35700, 224808, 1427679, 9126975, 58659315, 378658800, 2453288292, 15944020316, 103897691640, 678610095504, 4441369072335, 29120107628115, 191233066114545, 1257635016353100, 8281448901713295, 54596558353508330, 360317821119481660, 23802795479252...
[ "easy", "nonn" ]
A286328
[ 4, 3, 24, 60, 14, 9, 180, 264, 20, 480, 19, 84, 924, 1104, 51, 1740, 155, 2244, 2520, 2664, 3120, 3444, 99, 51, 51, 5304, 5724, 65, 399, 8064, 8580, 9384, 9660, 221, 11400, 12324, 13284, 13944, 14964, 16020, 819, 18240, 194, 99, ...
[ "nonn" ]
A131888
[ 1, 1, 2, 1, 4, 2, 6, 2, 8, 3, 12, 4, 30, 5, 16, 5, 24, 7, 36, 9, 60, 11, 210, 15, 32, 7, 48, 12, 72, 16, 120, 21, 180, 26, 420, 36, 2310, 52, 64, 11, 96, 19, 144, 29, 240, 38, 216, 31, 360, 52, 840, 74, 900, 66...
[ "easy", "nonn" ]
A255340
[ 4, 7, 12, 64, 1.3407807929942597e+154 ]
[ "nonn" ]
A342709
[ 1, 64, 3025, 142129, 6677056, 313679521, 14736260449, 692290561600, 32522920134769, 1527884955772561, 71778070001175620, 3372041405099481600, 158414167969674460000, 7.4420938531696e+21, 3.496199969310015e+23, 1.6424697761903902e+25 ]
[ "nonn", "easy" ]
A059801
[ 2, 3, 7, 17, 59, 283, 311, 383, 499, 521, 541, 599, 1193, 1993, 2671, 7547, 24019, 46301, 48121, 68597, 91283, 131497, 148663, 184463, 341233 ]
[ "nonn", "nice", "hard" ]
A207343
[ 13, 169, 426, 2190, 9668, 41112, 186002, 828530, 3625724, 16156680, 71713022, 316670472, 1405263307, 6230358367, 27580548686, 122260297698, 541844851805, 2400338788073, 10637278675771, 47137626165435, 208858393685960 ]
[ "nonn" ]
A299299
[ 3, 4, 5, 6, 11, 17, 97, 601 ]
[ "nonn", "fini", "full" ]
A296568
[ 3, 6, 8, 4, 1, 4, 0, 9, 6, 3, 5, 0, 7, 1, 4, 3, 0, 4, 8, 9, 3, 4, 9, 9, 8, 7, 0, 9, 4, 3, 3, 9, 8, 3, 2, 1, 8, 5, 0, 7, 1, 3, 4, 7, 6, 0, 3, 4, 5, 1, 0, 3, 4, 9, 8, 0, 8, 8, 6, 8, 7, 6, 5, 9...
[ "nonn", "easy", "cons" ]
A185358
[ 1, 1, 1, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 1, 5, 1, 1, 1, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 1, 5...
[ "nonn" ]
A360482
[ 0, 1, 8, 120, 2848, 92960, 3868224, 195810496, 11680512512, 802445898240, 62396469222400, 5417515922441216, 519519435065020400, 54535504354085680000, 6.219954774471102e+21, 7.659035247134826e+23, 1.0126933006828903e+26, 1.4310318526812295e+28 ]
[ "nonn" ]
A117751
[ 5, 7, 42, 11, 15, 231, 22, 44583, 30, 1002, 147273, 7089500, 42, 451276, 30167357, 56, 118114304, 77, 44108109, 431149389, 101, 9289091, 1482074143, 135, 23338469, 4835271870, 176, 37338, 15065878135, 231, 63261, 133230930, 3397584011986773, 297 ]
[ "nonn", "tabf" ]
A241855
[ 0, 0, 1, 0, 1, 5, 0, 1, 10, 21, 0, 1, 26, 91, 85, 0, 1, 50, 651, 820, 341, 0, 1, 122, 2451, 16276, 7381, 1365, 0, 1, 170, 14763, 120100, 406901, 66430, 5461, 0, 1, 290, 28731, 1786324, 5884901, 10172526, 597871, 21845, 0, 1,...
[ "nonn", "tabl" ]
A256953
[ 1640073, 6268245, 12037534, 18040804, 26587024, 38735508, 56306098, 77953860, 108710066, 143899574, 191489068, 248887210, 328813654, 421350126, 546389574, 698911558, 922595390, 1188517170, 1572350918, 2050531494, 2786854414 ]
[ "nonn" ]
A204810
[ 1, 2, 3, 4, 5, 8, 9, 14, 16, 18, 33, 48, 52, 96, 97, 184, 185, 368, 369, 384, 385, 472, 473 ]
[ "nonn", "full", "fini" ]
A272708
[ 4, 8, 12, 24, 20, 40, 28, 56, 36, 72, 44, 88, 52, 104, 60, 120, 68, 136, 76, 152, 84, 168, 92, 184, 100, 200, 108, 216, 116, 232, 124, 248, 132, 264, 140, 280, 148, 296, 156, 312, 164, 328, 172, 344, 180, 360, 188, 376, ...
[ "nonn", "easy" ]
A078787
[ 1, 102, 203, 304, 405, 506, 607, 708, 809, 910, 1011, 1112, 1213, 1314, 1415, 1516, 1617, 1718, 1819, 1920, 2021, 2122, 2223, 2324, 2425, 2526, 2627, 2728, 2829, 2930, 3031, 3132, 3233, 3334, 3435, 3536, 3637, 3738, 3839, 3940, 4041, ...
[ "nonn", "easy" ]
A369261
[ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 15, 23, 16, 20, 24, 25, 26, 27, 21, 28, 29, 30, 29, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 29, 42, 43, 44, 45, 46, 47, 48, 4...
[ "nonn" ]
A202104
[ 0, 1, 3, 4, 5, 8, 10, 11, 14, 16, 17, 21, 23, 26, 30, 33, 35, 37, 38, 42, 43, 44, 45, 47, 49, 52, 56, 57, 58, 59, 60, 61, 63, 64, 66, 72, 74, 75, 77, 79, 81, 85, 91, 94, 96, 98, 99, 100, 102, 103, 105, 109, 110, ...
[ "nonn", "easy" ]
A213203
[ -1, -1, 3, 132, 4260, 172440, 9069480, 609618240, 51209444160, 5267273961600, 651825357321600, 95601055094899200, 16405141092269530000, 3.2571661956215525e+21, 7.41005309513166e+23 ]
[ "sign", "easy" ]
A369932
[ 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 1, 0, 0, 0, 1, 3, 2, 0, 0, 0, 0, 3, 5, 2, 0, 0, 0, 0, 2, 11, 9, 3, 0, 0, 0, 0, 1, 15, 32, 16, 4, 0, 0, 0, 0, 1, 12, 63, 76, 25, 5, 0, 0, 0, 0, 0, 8, 89,...
[ "nonn", "tabl" ]
A060292
[ 36, 40, 72, 90, 96, 126, 144, 168, 176, 200, 225, 234, 240, 252, 270, 280, 288, 297, 320, 360, 396, 408, 420, 432, 450, 480, 504, 520, 540, 546, 550, 560, 576, 588, 600, 630, 648, 672, 675, 690, 714, 720, 735, 736, 768, 780, ...
[ "easy", "nonn" ]
A048034
[ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 36, 45, 55, 220, 264, 312, 780, 910, 1050, 3465, 4220, 5100, 21420, 26775, 33117, 118104, 146300, 179340, 574644, 708477, 866019, 2899380, 3610540, 4463500, 15634300, 19623175, 24446565, 83635695 ]
[ "nonn" ]
A326465
[ 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 2, 3, 5, 7, 11, 15, 22, 31, 42, 56, 76, 99, 130, 168, 216, 274, 349, 435, 544, 674, 831, 1017, 1244, 1507, 1823, 2194, 2629, 3136, 3734, 4420, 5223, 6148, 7215, 8438, 9851, 11453, 13292, ...
[ "nonn" ]
A387500
[ 5, 36, 420, 4644, 51060, 518238, 5206320, 52565169, 528113445, 5302625562 ]
[ "nonn", "base", "more" ]
A020190
[ 9, 21, 45, 63, 91, 105, 183, 231, 305, 361, 427, 549, 561, 671, 679, 703, 793, 861, 1105, 1261, 1281, 1541, 1729, 2121, 2465, 2501, 2745, 2871, 3367, 3439, 3843, 3845, 4141, 4187, 4577, 5185, 5307, 5551, 5565, 5901, 5917, 6161, 6405...
[ "nonn" ]
A269015
[ 0, 145, 1066, 14240, 109058, 1049588, 8134304, 69184207, 534525058, 4286305792, 32838001316, 255036784680, 1935580387968, 14746081110093, 110945210978202, 834598743197152, 6232287294972630, 46465158121063710, 344786403529703300 ]
[ "nonn" ]
A072259
[ 12, 57, 261, 1173, 5205, 22869, 99669, 431445, 1856853, 7951701, 33903957, 144004437, 609572181, 2572506453, 10826896725, 45455070549, 190410216789, 796000605525, 3321441375573, 13835521316181, 57541108520277, 238960527103317, 991026480502101 ]
[ "nonn", "easy" ]
A106516
[ 1, 3, 1, 9, 4, 1, 27, 13, 5, 1, 81, 40, 18, 6, 1, 243, 121, 58, 24, 7, 1, 729, 364, 179, 82, 31, 8, 1, 2187, 1093, 543, 261, 113, 39, 9, 1, 6561, 3280, 1636, 804, 374, 152, 48, 10, 1, 19683, 9841, 4916, 2440, 1178, 5...
[ "easy", "nonn", "tabl" ]
A324708
[ 114, 594, 1140, 5940, 8640, 10744, 12285, 13500, 44772, 60858, 62100, 67095, 67158, 79296, 79650, 79750, 118500, 142310, 143808, 177750, 185368, 298188, 308220, 356408, 377784, 462330, 545238, 600392, 608580, 609928, 624184, 635624, 643336, 643776, ...
[ "nonn" ]
A057829
[ 1, 3, 9, 27, 51, 81, 243, 279, 729, 2187, 4131, 4947, 6561, 19683, 21213, 22599, 23571, 48357, 59049, 104733, 177147, 184419, 220887, 334611, 531441, 640791, 808461 ]
[ "nonn" ]
A389465
[ 1, 1, 1, 2, 1, 2, 1, 4, 3, 3, 1, 5, 1, 4, 5, 8, 1, 7, 1, 9, 7, 6, 1, 12, 5, 7, 9, 12, 1, 11, 1, 16, 9, 9, 10, 19, 1, 10, 11, 20, 1, 15, 1, 18, 18, 12, 1, 25, 7, 18, 13, 21, 1, 22, 13, 27, 15, 15, 1, ...
[ "nonn" ]
A136889
[ 0, 5, 50, 55, 235, 500, 505, 550, 755, 2350, 5000, 5005, 5050, 5055, 5500, 5505, 7550, 23500, 50000, 50005, 50050, 50055, 50235, 50500, 50505, 50550, 55000, 55005, 55050, 57055, 57735, 72335, 73055, 75500, 223735, 235000, 235005, 235235, 50...
[ "base", "nonn" ]
A135646
[ 1, 2, 2, 3, 3, 3, 4, 5, 5, 4, 5, 6, 7, 6, 5, 6, 8, 9, 9, 8, 6, 7, 9, 12, 11, 12, 9, 7, 8, 11, 13, 15, 15, 13, 11, 8, 9, 12, 16, 16, 19, 16, 16, 12, 9, 10, 14, 18, 20, 21, 21, 20, 18, 14, 10, 11, 15, 20,...
[ "nonn", "tabl" ]
A290153
[ 2, 3, 8, 12, 15, 75, 92, 123, 126, 267, 272, 525, 561, 1041, 1947, 2571, 11667, 13656, 15981, 29852, 35256, 105530, 122733, 125751 ]
[ "nonn", "more", "hard" ]
A174156
[ 8, 10, 12, 22, 100, 146, 154, 219, 246, 269, 287, 309, 336, 373, 392, 398, 423, 440, 449, 476, 515, 540, 557, 628, 671, 693, 715, 733, 746, 780, 848, 879, 913, 924, 926, 937, 974, 975, 1130, 1191, 1193, 1198, 1204, 1260, 1272, ...
[ "nonn", "easy" ]
A013998
[ 271441, 904631, 16532714, 24658561, 27422714, 27664033, 46672291, 102690901, 130944133, 196075949, 214038533, 517697641, 545670533, 801123451, 855073301, 903136901, 970355431, 1091327579, 1133818561, 1235188597, 1389675541, 1502682721, 2059739221, 2304156469, 29764078...
[ "nonn" ]
A191970
[ 1, 2, 2, 6, 12, 33, 93, 287, 940, 3309, 12183, 47133, 190061, 796405, 3456405, 15501183, 71681170, 341209173, 1669411182, 8384579797, 43180474608, 227797465130, 1229915324579, 6790642656907, 38311482445514, 220712337683628, 1297542216770482, 7779452884747298 ]
[ "nonn" ]
A051201
[ 1, 3, 4, 7, 8, 12, 13, 15, 19, 21, 22, 28, 29, 31, 33, 39, 40, 43, 44, 51, 53, 55, 56, 60, 66, 68, 70, 73, 74, 83, 84, 87, 89, 91, 93, 103, 104, 106, 108, 112, 113, 123, 124, 127, 130, 132, 133, 138, 146, 149, 151, ...
[ "nonn" ]
A059508
[ 5, 11, 29, 79, 216, 590, 1609, 4381, 11911, 32339, 87690, 237496, 642509, 1736399, 4688081, 12645655, 34080924, 91775426, 246948241, 663999649, 1784138875, 4790751131, 12856028814, 34478744044, 92416515221 ]
[ "easy", "nonn" ]
A132975
[ 1, 1, 1, 2, 3, 4, 5, 7, 10, 12, 15, 20, 26, 32, 39, 50, 63, 76, 92, 114, 140, 168, 201, 244, 295, 350, 415, 496, 591, 696, 818, 967, 1140, 1332, 1554, 1820, 2126, 2468, 2861, 3324, 3855, 4448, 5126, 5916, 6816, 7824, 8970, ...
[ "nonn" ]
A152663
[ 1, 1, 6, 16, 120, 540, 5040, 32256, 362880, 3024000, 39916800, 410572800, 6227020800, 76281004800, 1307674368000, 18598035456000, 355687428096000, 5762136335155200, 121645100408832000, 2211729098342400000, 51090942171709440000, 1.030334000462807e+21 ]
[ "nonn" ]
A316768
[ 1, 2, 4, 11, 29, 91, 284, 950, 3235, 11336, 40370, 146095, 534774, 1977891, 7377235, 27719883 ]
[ "nonn", "more" ]
A251434
[ 240, 9439, 127566, 938895, 4868362, 19285211, 64105154, 183394583, 471403286, 1102425601, 2401296076, 4893740761, 9479843984, 17499293961, 31078021378, 53193428735, 88367832130, 142559457359 ]
[ "nonn" ]
A264386
[ 1, 10, 19, 4, 13, 22, 7, 16, 25, 2, 11, 20, 5, 14, 23, 8, 17, 26, 3, 12, 21, 6, 15, 24, 9, 18, 27 ]
[ "nonn", "base", "fini", "full" ]
A302824
[ 32, 857, 8485, 51476, 454733, 5520999, 58122740, 535479917, 5157154189, 53093061218, 540288316449, 5345428744717, 53027374853798, 532672142887053, 5353282756285143, 53526563573229030, 534895931849423040 ]
[ "nonn" ]
A377556
[ 1, 1, 5, 19, 193, 1181, 13021, 117895, 1868609, 20980153, 348219541, 4940639771, 98898110785, 1632238421269, 34910480911853, 672959412044431, 16733065940227200, 359936040496423040, 9469928134781143000, 229631546862609400000, 6.716832478519735e+21, 1.7834429407614193e+23 ]
[ "nonn" ]
A328116
[ 0, 1, 2, 3, 4, 5, 6, 7, 9, 12, 15, 20, 21, 28, 30, 31, 32, 33, 35, 37, 38, 40, 43, 46, 47, 49, 50, 60, 61, 65, 67, 68, 71, 73, 74, 76, 79, 84, 85, 87, 91, 97, 98, 104, 106, 112, 118, 119, 121, 129, 133, 134, 151,...
[ "nonn" ]
A099158
[ 0, 1, 14, 171, 2044, 24341, 289674, 3446911, 41014904, 488035881, 5807129734, 69098919251, 822206626164, 9783419785021, 116412711336194, 1385192464081191, 16482376713731824, 196123462390215780 ]
[ "easy", "nonn" ]
A209342
[ 1, 7, 24, 205, 1724, 16968, 172610, 1830872, 19860306, 219630346, 2464760150, 28002352120 ]
[ "nonn" ]
A328313
[ 2, 4, 2312, 3.217644767340673e+30 ]
[ "nonn" ]
A246726
[ 3, 4, 9, 1, 9, 8, 1, 8, 6, 2, 0, 8, 5, 4, 9, 8, 7, 6, 4, 7, 3, 6, 2, 3, 2, 3, 7, 0, 4, 5, 6, 9, 4, 3, 1, 5, 2, 7, 8, 2, 6, 2, 0, 4, 9, 8, 4, 3, 7, 4, 7, 5, 0, 7, 1, 9, 1, 4, 5, 1, 0, 9, 3, 9...
[ "nonn", "cons", "easy" ]
A167624
[ 0, 1, 0, 25, 0, 9, 0, 17, 0, 17, 0, 9, 0, 25, 0, 1, 0, 1, 0, 25, 0, 9, 0, 17, 0, 17, 0, 9, 0, 25, 0, 1, 0, 1, 0, 25, 0, 9, 0, 17, 0, 17, 0, 9, 0, 25, 0, 1, 0, 1, 0, 25, 0, 9, 0, 17, 0, 17, 0, 9, 0...
[ "nonn", "easy" ]
A076546
[ 5, 7, 11, 5, 7, 11, 13, 17, 23, 23, 31, 31, 37, 41, 47, 53, 53, 61, 61, 67, 73, 73, 83, 89, 89, 97, 101, 103, 107, 113, 113, 131, 131, 139, 139, 151, 157, 157, 167, 173, 173, 181, 181, 191, 193, 199, 211, 211, 223, 227...
[ "nonn", "easy" ]
A251685
[ 1, 2, 6, 18, 45, 108, 252, 578, 1270, 2716, 5678, 11678, 23664, 47182, 92538, 178892, 341481, 644648, 1205062, 2231304, 4092646, 7437680, 13398520, 23939558, 42451586, 74754652, 130777182, 227346498, 392806891, 674630766, 1151926416, 1955909898, 330329...
[ "nonn" ]
A317598
[ 1, 8, 100, 3047, 218043, 40015089, 18167894481, 20471431125281, 58293522938785300 ]
[ "nonn" ]
A225674
[ 3, 28, 45, 136, 153, 171, 325, 351, 496, 1431, 3321, 4753, 7381, 8128, 13203, 29161, 31375, 32896, 56953, 65341, 118341, 166753, 195625, 354061, 780625, 1063611, 2390391, 2883601, 3544453, 5649841, 6060421, 6835753, 6924781, 9563751, 11527201, 12...
[ "nonn" ]
A352721
[ 0, 1, 8, 64, 1000, 8000, 64000, 1000000, 8000000, 64000000, 1000000000, 8000000000, 64000000000, 1000000000000, 8000000000000, 64000000000000, 1000000000000000, 8000000000000000, 64000000000000000, 1000000000000000000, 8000000000000000000, 64000000000000000000 ]
[ "nonn", "base", "easy", "changed" ]
A014393
[ 1, 9, 81, 29, 61, 49, 41, 69, 21, 89, 1, 9, 81, 29, 61, 49, 41, 69, 21, 89, 1, 9, 81, 29, 61, 49, 41, 69, 21, 89, 1, 9, 81, 29, 61, 49, 41, 69, 21, 89, 1, 9, 81, 29, 61, 49, 41, 69, 21, 89, 1, 9, 81, 29, 61, ...
[ "nonn", "base", "easy" ]
A060046
[ 1, 2, 4, 8, 14, 24, 40, 56, 84, 122, 168, 232, 312, 408, 528, 672, 865, 1078, 1336, 1648, 2002, 2424, 2912, 3472, 4116, 4872, 5744, 6648, 7752, 8976, 10304, 11872, 13566, 15424, 17556, 19896, 22414, 25256, 28336, 31584, 35462, 39482, ...
[ "nonn", "easy" ]
A035486
[ 1, 2, 2, 3, 3, 4, 4, 4, 2, 6, 5, 5, 5, 2, 8, 6, 6, 6, 7, 7, 6, 7, 7, 7, 4, 9, 2, 13, 8, 8, 8, 8, 2, 11, 12, 2, 9, 9, 9, 9, 10, 9, 8, 11, 18, 10, 10, 10, 10, 6, 12, 9, 16, 17, 16, 11, 11, 11, 11, 11,...
[ "nonn", "tabl", "nice", "look", "easy" ]
A020811
[ 1, 3, 6, 0, 8, 2, 7, 6, 3, 4, 8, 7, 9, 5, 4, 3, 3, 8, 7, 8, 8, 7, 3, 8, 0, 0, 4, 1, 5, 0, 3, 2, 7, 2, 9, 9, 5, 5, 3, 6, 6, 3, 7, 4, 8, 9, 2, 5, 3, 7, 0, 5, 6, 2, 6, 9, 0, 7, 0, 5, 1, 4, 2, 6...
[ "nonn", "cons", "easy" ]
A251621
[ 1, 1, 1, 1, 1, 1, 3, 1, 2, 4, 1, 1, 4, 6, 2, 6, 4, 2, 4, 6, 6, 2, 6, 4, 2, 6, 4, 6, 8, 4, 2, 4, 2, 4, 14, 4, 6, 2, 10, 2, 6, 6, 4, 6, 6, 2, 10, 2, 4, 2, 12, 12, 4, 2, 4, 6, 2, 10, 6, 6, 6, 2, ...
[ "nonn" ]
A233483
[ 172952, 8254896, 386906152, 18116531520, 846914338316, 39587056212137, 1850126770689608, 86465768048368480, 4040923982272527000, 188849818269171060000, 8.825754751934559e+21, 4.124649777062044e+23 ]
[ "nonn" ]
A126377
[ 1, 23, 67, 197, 581, 1717, 5081, 15051, 44619, 132357, 392825, 1166383, 3464543, 10294187, 30595831, 90958325, 270471141, 804429189, 2392956009, 7119580287, 21185591199, 63050397375, 187668462027, 558658899825, 1663222335825 ]
[ "nonn", "base" ]
A322884
[ 1, 1, 5, 39, 493, 9320, 242366, 8193031, 346270455, 17780116911, 1085004090887, 77324278953174, 6344818280326312, 592415284729545500, 62319734032202720000, 7.323734663214255e+21, 9.544678510668311e+23, 1.3706573925835334e+26 ]
[ "nonn" ]
A246487
[ 78, 87, 104, 401, 1144, 2072, 2178, 2702, 4411, 7038, 7348, 7878, 8307, 8437, 8712, 8787, 11144, 11544, 12584, 15834, 20710, 20913, 21476, 21978, 22164, 26070, 31902, 43851, 44111, 44511, 46122, 48521, 66649, 67412, 87912, 94666, 102786, 1225...
[ "nonn", "base", "easy" ]
A112445
[ 370851481, 1310486905, 1452092005, 1553860945, 2719940041, 3328293745, 3860623585, 5394826801, 5612626041, 5659475185, 6295936465, 8857509661, 9234602385, 10780911505, 10975165201, 11718888181, 12254138065, 12416553721, 12452890681, 13577445505, 14795826661 ]
[ "easy", "nonn" ]
A169846
[ 3, 6, 4, 11, 5, 1, 9, 7, 10, 17, 8, 22, 2, 12, 14, 31, 13, 35, 15, 19, 16, 41, 20, 26, 21, 24, 28, 56, 25, 60, 29, 18, 30, 27, 33, 66, 34, 23, 38, 73, 37, 80, 39, 43, 40, 88, 44, 49, 45, 32, 46, 99, 47, 52, 4...
[ "nonn" ]
A099877
[ 1, 7, 9, 6, 2, 2, 6, 8, 3, 6, 9, 3, 5, 7, 1, 8, 0, 3, 1, 6, 4, 0, 0, 1, 5, 0, 4, 2, 3, 2, 6, 5, 9, 7, 5, 8, 9, 5, 4, 2, 2, 6, 6, 3, 5, 5, 3, 4, 5, 1, 6, 9, 2, 5, 2, 9, 9, 6, 0, 0, 2, 8, 1, 2...
[ "cons", "easy", "nonn" ]
A112807
[ 1, 1, 3, 13, 66, 365, 2132, 12940, 80804, 515776, 3350165, 22071930, 147141469, 990714900, 6727506071, 46020535285, 316837676938, 2193700600205, 15265011340106, 106699930507346, 748827090415380, 5274495878205514 ]
[ "nonn" ]
A174212
[ 1, 1, 4, 27, 16777216, 437893890380859400, 5.007020782634593e+80 ]
[ "easy", "nonn" ]
A108227
[ 3, 5, 9, 18, 31, 46, 67, 91, 122, 158, 194, 238, 284, 334, 392, 456, 522, 591, 668, 749, 835, 929, 1028, 1133, 1242, 1352, 1469, 1594, 1727, 1869, 2019, 2163, 2315, 2471, 2636, 2802, 2977, 3157, 3342, 3534, 3731, 3933, 4145, 4358,...
[ "nonn" ]
A070342
[ 1, 3, 9, 8, 5, 15, 7, 2, 6, 18, 16, 10, 11, 14, 4, 12, 17, 13, 1, 3, 9, 8, 5, 15, 7, 2, 6, 18, 16, 10, 11, 14, 4, 12, 17, 13, 1, 3, 9, 8, 5, 15, 7, 2, 6, 18, 16, 10, 11, 14, 4, 12, 17, 13, 1, 3, 9, 8, ...
[ "nonn", "easy" ]