id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A350034
[ 0, 6, 1, 1, 2, 26, 1, 36, 4, 3, 5, 56, 2, 66, 7, 5, 8, 86, 3, 96, 10, 7, 11, 116, 4, 126, 13, 9, 14, 146, 5, 156, 16, 11, 17, 176, 6, 186, 19, 13, 20, 206, 7, 216, 22, 15, 23, 236, 8, 246, 25, 17, 26, 266, 9,...
[ "nonn", "easy" ]
A351145
[ 1, 4, 6, 15, 27, 29, 56, 112, 128, 131, 210, 450, 540, 570, 572, 792, 1782, 2222, 2420, 2444, 2448, 3003, 7007, 9009, 10101, 10283, 10339, 10341, 11440, 27456, 36192, 41652, 42772, 43252, 43284, 43288, 43758, 107406, 144534, 170238, 176...
[ "nonn", "tabl" ]
A292094
[ 138, 133, 10, 121, 24, 215, 36, 333, 38, 407, 4429, 343, 1338, 85, 720, 1023, 420, 105, 118, 2259, 33530, 328, 6250, 1515, 370, 9729, 2059, 825, 6282, 309, 310620, 20089, 10014, 187, 12069, 1101, 21756, 2359, 1253, 53811, 7277, 598, ...
[ "nonn" ]
A190743
[ 5, 11, 20, 26, 34, 42, 47, 55, 63, 70, 77, 84, 91, 98, 106, 113, 121, 128, 135, 143, 149, 157, 164, 171, 178, 185, 194, 199, 208, 214, 221, 230, 236, 245, 251, 257, 266, 272, 279, 288, 293, 301, 308, 316, 323, 331, 337, 34...
[ "nonn" ]
A289770
[ 1, 10, 101, 1101, 11011, 111011, 1110100, 11110100, 111101010, 1111101010, 11111010101, 111111010101, 1111110101101, 11111110101101, 111111101010011, 1111111101010011, 11111111010101000, 111111111010101000, 1111111110101010000, 11111111110101010000 ]
[ "nonn", "easy" ]
A207440
[ 21, 441, 3223, 25689, 243981, 2405923, 24609889, 254583643, 2656816215, 27824719899, 292111495571, 3070203057091, 32292544414703, 339784841081719, 3576079932320067, 37641488144050990, 396241624155306500 ]
[ "nonn" ]
A237297
[ 145488, 4167736, 134597244, 4821666340, 181211467948, 7117073796344, 291062464483036, 12383494364753228, 546793895792910900, 24967144157622740000, 1.1736094101606291e+21, 5.652111899101603e+22 ]
[ "nonn" ]
A288022
[ 47, 157, 167, 257, 367, 557, 587, 607, 647, 677, 727, 947, 977, 1097, 1117, 1187, 1217, 1367, 1657, 1747, 1777, 1907, 1987, 2207, 2287, 2417, 2467, 2677, 2837, 2897, 2957, 3307, 3407, 3607, 3617, 3637, 3727, 3797, 4007, 4357, 4457, 45...
[ "nonn" ]
A196095
[ 11, 19, 29, 31, 41, 59, 61, 71, 79, 89, 101, 109, 139, 149, 151, 181, 191, 199, 239, 251, 269, 281, 349, 401, 409, 421, 439, 449, 491, 499, 509, 521, 569, 599, 601, 691, 701, 709, 739, 751, 769, 809, 821, 839, 881, 991, 1009...
[ "nonn", "base" ]
A277515
[ 3, 3, 3, 3, 7, 3, 3, 3, 3, 13, 3, 3, 3, 3, 3, 7, 3, 3, 3, 3, 11, 3, 3, 3, 3, 3, 19, 3, 3, 3, 3, 11, 3, 3, 3, 3, 3, 13, 3, 3, 3, 3, 7, 3, 3, 3, 3, 3, 5, 3, 3, 3, 3, 7, 3, 3, 3, 3, 7, 3, 3, 3, 3...
[ "nonn", "easy" ]
A141411
[ 3, 1, 31, 28, 365, 514, 4388, 8220, 53871, 122284, 673222, 1748055, 8535397, 24383499, 109449848, 334783855, 1415768769, 4548229589, 18434398665, 61345927764, 241210652738, 823296868656, 3167642169823, 11010462627756, 41708741708554, 146886286090602 ]
[ "nonn", "easy" ]
A312572
[ 1, 4, 8, 14, 18, 26, 28, 35, 39, 46, 47, 54, 61, 63, 71, 76, 78, 84, 91, 92, 100, 103, 112, 113, 118, 126, 126, 134, 141, 142, 150, 157, 156, 165, 166, 175, 178, 182, 192, 192, 198, 206, 205, 213, 222, 220, 231, 232, 239...
[ "nonn" ]
A294063
[ 0, 2, 4, 12, 6, 20, 26, 46, 52, 58, 66, 96, 80, 90, 104, 148, 162, 210, 224, 276, 290, 346, 318, 382, 352, 372, 394, 416, 438, 518, 542, 566, 592, 684, 712, 810, 838, 866, 898, 1008, 960, 1076, 1112, 1234, 1270, 1306, 1344, ...
[ "nonn", "easy" ]
A231574
[ 2, 3, 11, 37, 634061, 7256527, 1424681173049, 123937002926372180000 ]
[ "nonn" ]
A173161
[ 2, 3, 1, 6, 4, 5, 4, 9, 5, 8, 7, 8, 5, 6, 1, 2, 3, 0, 1, 3, 2, 5, 5, 0, 3, 0, 1, 5, 6, 0, 3, 0, 6, 1, 0, 5, 7, 4, 7, 1, 1, 4, 9, 0, 6, 0, 7, 5, 8, 5, 8, 5, 8, 2, 2, 5, 5, 9, 8, 8, 3, 4, 9, 5...
[ "nonn", "cons" ]
A152304
[ 1, 0, 1, 3, 5, 8, 5, 5, 2, 1, 0, 2, 0, 2, 2, 7, 9, 2, 8, 7, 5, 6, 7, 6, 3, 6, 8, 2, 2, 7, 9, 2, 4, 5, 5, 9, 2, 3, 7, 5, 4, 2, 5, 0, 2, 9, 5, 0, 0, 7, 6, 8, 7, 8, 2, 5, 8, 5, 0, 3, 5, 2, 7, 4...
[ "nonn" ]
A161960
[ 1, 2, 3, 3, 11, 15, 9, 11, 5, 6, 17, 1, 11, 8, 9, 61, 11, 9, 39, 85, 23, 11, 35, 38, 61, 43, 137, 73, 77, 162, 43, 181, 191, 40, 35, 73, 1, 20, 251, 263, 137, 283, 295, 17, 319, 7, 19, 17, 367, 42, 131, 409, 421,...
[ "nonn", "frac" ]
A029940
[ 1, 1, 2, 2, 4, 4, 6, 8, 12, 16, 10, 32, 12, 36, 64, 64, 16, 144, 18, 256, 144, 100, 22, 1024, 80, 144, 216, 864, 28, 4096, 30, 1024, 400, 256, 576, 13824, 36, 324, 576, 16384, 40, 20736, 42, 4000, 9216, 484, 46, 131072, ...
[ "nonn" ]
A335688
[ 1, 1, 2, 1, 3, 2, 6, 5, 126, 115, 297108, 1370225, 200590993732752, 531984953824739400, 2.7113273919595443e+37, 5.665387451331866e+49 ]
[ "nonn", "frac" ]
A369115
[ 1, 3, 7, 14, 26, 46, 80, 138, 239, 417, 735, 1309, 2355, 4275, 7823, 14416, 26728, 49820, 93300, 175454, 331170, 627154, 1191204, 2268604, 4330915, 8286101, 15884857, 30507175, 58686513, 113066033, 218137531, 421391695, 814999229, 1578000229, 30584...
[ "nonn" ]
A243622
[ 1, 2, 4, 10, 11, 12, 13, 58, 63, 89, 132, 157, 426, 457, 506, 613, 1839, 1936, 2042, 2355, 3178, 3782, 8556, 8688, 22152, 23232, 44074, 71770, 222666 ]
[ "nonn", "more" ]
A152388
[ 6143, 11519, 23039, 205823, 253439, 345599, 417023, 463103, 752639, 1071359, 1474559, 1511423, 1753343, 1766399, 1903103, 2188799, 2271743, 2711039, 2741759, 2747903, 2813183, 2997503, 3032063, 3258623, 3371519, 3463679 ]
[ "nonn" ]
A092839
[ 3, 4, 6, 10, 216 ]
[ "nonn", "more" ]
A089663
[ 0, 2, 259, 6284, 77180, 646960, 4235864, 23313408, 112793088, 493969920, 1998346240, 7577934848, 27232132096, 93517705216, 308908943360, 986642513920, 3059995508736, 9247515082752, 27310549696512, 79012328898560, 224396746424320, 626707269681152 ]
[ "nonn", "easy" ]
A283105
[ 4, 9, 12, 25, 45, 49, 121, 169, 289, 361, 529, 637, 841, 961, 1369, 1681, 1849, 2209, 2809, 3481, 3721, 4489, 5041, 5329, 6241, 6889, 7921, 9409, 10201, 10609, 11449, 11881, 12769, 13357, 16129, 17161, 18769, 19321, 22201, 22801, 24649,...
[ "nonn" ]
A045948
[ 1, 1, 1, 2, 2, 2, 2, 4, 12, 12, 12, 12, 12, 12, 12, 24, 24, 24, 24, 24, 24, 24, 24, 24, 120, 120, 360, 360, 360, 360, 360, 720, 720, 720, 720, 720, 720, 720, 720, 720, 720, 720, 720, 720, 720, 720, 720, 720, 5040, 5040...
[ "nonn" ]
A256276
[ 1, 2, 0, 1, 4, 0, 0, 2, 0, 2, 0, 0, 2, 0, 0, 1, 4, 0, 0, 4, 0, 0, 0, 0, 3, 4, 0, 0, 4, 0, 0, 2, 0, 2, 0, 0, 2, 0, 0, 2, 4, 0, 0, 0, 0, 0, 0, 0, 1, 6, 0, 2, 4, 0, 0, 0, 0, 2, 0, 0, 2, 0, 0, 1...
[ "nonn" ]
A281564
[ 0, 0, 5, 18, 141, 602, 2180, 7006, 20979, 59698, 163635, 435900, 1135036, 2901852, 7307093, 18167506, 44683929, 108886702, 263208036, 631773802, 1507041943, 3575151970, 8439694735, 19835439712, 46433224508, 108305733064, 251797970649 ]
[ "nonn" ]
A276486
[ 1, 2, 10, 3, 40, 130, 85, 646, 2194, 355, 7648, 24010, 15829, 119518, 406042, 65695, 1415212, 4442722, 2928967, 22115068, 75132106, 48623587, 371267080, 1259672002, 815469541, 6225424630, 21122682514, 3418513393, 73623587722, 231126303346, 76187472767, 9...
[ "nonn", "easy" ]
A187366
[ 5, 231, 12155, 676039, 38779380, 2268783825, 134564468610, 8061900920775, 486734856412028, 29566145391215356, 1804857108504066600, 110628135069209200000, 6.804253717299758e+21, 4.197276215529728e+23, 2.5956855321888355e+25, 1.6087667534665746e+27 ]
[ "nonn", "easy" ]
A323420
[ 1, 2, 1, 3, 1, 2, 4, 3, 1, 2, 5, 3, 1, 2, 4, 6, 1, 2, 5, 3, 1, 7, 4, 6, 1, 2, 5, 3, 8, 7, 4, 6, 1, 2, 5, 3, 9, 7, 4, 6, 1, 2, 5, 3, 8, 10, 4, 6, 1, 2, 5, 3, 9, 7, 4, 11, 1, 2, 5, 3, 8, 10, 4, ...
[ "nonn" ]
A168064
[ 0, 2, 7, 8, 10, 11, 13, 14, 16, 17, 19, 20, 22, 24, 25, 27, 28, 29, 31, 32, 33, 35, 36, 38, 40, 41, 43, 44, 46, 48, 49, 51, 52, 54, 55, 57, 58, 59, 61, 62, 63, 65, 66, 68, 70, 71, 73, 74, 75, 77, 78, 80, 82, 84...
[ "nonn", "easy" ]
A107089
[ 1, 1, -4, 23, -150, 1054, -7761, 58998, -459085, 3636389, -29209558, 237295537, -1945823646, 16081045446, -133787515943, 1119454523221, -9413778489629, 79510460561765, -674169212593940, 5736078315701995, -48956250060321144, 419002149097227650 ]
[ "sign" ]
A334145
[ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 20, 21, 22, 30, 31, 33, 40, 41, 44, 50, 51, 55, 60, 61, 66, 70, 71, 77, 80, 81, 88, 90, 91, 99, 100, 101, 110, 111, 121, 131, 132, 141, 142, 151, 152, 161, 162, 171, 172, 181, ...
[ "nonn", "base" ]
A252632
[ 572, 1684, 12840, 95904, 2641643, 101563107, 1669555189, 288820014768, 55492673837676, 1690135439315021, 1875667003386936600, 1.6857492213695937e+21, 8.884242841140056e+22 ]
[ "nonn" ]
A030804
[ 1, 2, 8, 32, 160, 963, 6746, 53974, 485771, 4857717, 53434892, 641218712, 8335843266, 116701805732, 1750527085987, 28008433375798, 476143367388568, 8570580612994224, 162841031646890270, 3256820632937805300 ]
[ "nonn", "easy" ]
A345045
[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 3, 1, 2, 1, 1, 2, 1, 2, 1, 1, 1, 2, 1, 1, 2, 1, 1, 4, 1, 1, 1, 1, 1, 2, 3, 1, 1, 2, 1, 2, 1, 1, 2, 1, 1, 2, 1...
[ "nonn" ]
A351005
[ 1, 1, 2, 1, 2, 2, 3, 2, 4, 2, 5, 4, 6, 4, 8, 5, 10, 6, 12, 8, 16, 9, 18, 12, 22, 14, 28, 16, 33, 20, 40, 24, 48, 28, 56, 34, 67, 40, 80, 46, 94, 56, 110, 64, 130, 75, 152, 88, 176, 102, 206, 118, 238, 138, 27...
[ "nonn" ]
A237862
[ 336, 1944, 11454, 68830, 405758, 2385956, 14144254, 84226372, 497945422, 2940973430, 17431426946, 103443591278, 612177964814, 3621788292858, 21459113612280, 127184449153574, 753001553319016, 4457885969403098 ]
[ "nonn" ]
A238613
[ 1, 1, 129, 3590508, 1955134763464, 8085018247233664000, 1.5472120802565707e+26, 1.0114611726199237e+34, 1.841159754991692e+42, 8.058215245927369e+50 ]
[ "nonn" ]
A279050
[ 2, 4, 5, 11, 23, 27, 28, 60, 114, 154, 160, 194, 412, 417, 769, 1189, 3845, 5381, 10905, 11192, 11630, 19737, 56080, 155740, 259431, 282673 ]
[ "nonn", "more", "hard" ]
A329170
[ 2, 18, 146, 578, 1602, 2306, 3602, 4626, 5186, 7058, 10818, 12546, 17426, 19602, 20738, 21906, 30978, 32402, 36866, 41618, 46658, 48402, 63506, 69698, 76178, 80658, 97346, 102402, 104978, 132498, 138386, 147458, 153666, 156818, 166466, 176402, ...
[ "nonn" ]
A290571
[ 1, 1, 2, 4, 7, 22, 60, 208, 695, 2566, 9451, 36158, 139574, 548347, 2174801, 8719651, 35244472, 143581782, 588858667, 2430036786, 10083626092, 42055927173, 176217259551, 741517642476, 3132564196880, 13281805256068, 56503895845238, 241135999611542 ]
[ "nonn" ]
A049673
[ 0, 1, 3, 12, 49, 205, 864, 3653, 15463, 65484, 277365, 1174889, 4976832, 21082073, 89304891, 378301260, 1602509321, 6788337557, 28755857952, 121811766781, 516002920895, 2185823443596, 9259296684333, 39223010163217, 166151337308544, 703828359351025 ]
[ "nonn", "easy" ]
A200974
[ 7, 28, 28, 106, 336, 106, 388, 3636, 3636, 388, 1387, 37254, 110854, 37254, 1387, 4874, 368218, 3167295, 3167295, 368218, 4874, 16919, 3543465, 86468392, 250149820, 86468392, 3543465, 16919, 58198, 33420304, 2279060645, 18714498069 ]
[ "nonn", "tabl" ]
A318458
[ 0, 0, 1, 0, 1, 6, 1, 0, 0, 8, 1, 0, 1, 10, 9, 0, 1, 16, 1, 20, 1, 6, 1, 0, 0, 16, 9, 28, 1, 10, 1, 0, 1, 0, 1, 36, 1, 6, 1, 32, 1, 34, 1, 40, 33, 10, 1, 0, 0, 34, 17, 36, 1, 2, 17, 0, 17, 32, 1, 44,...
[ "nonn", "base", "look" ]
A267469
[ 7, 49, 322, 2072, 13216, 83972, 532840, 3381860, 21491464, 136856180, 873803848, 5596638788, 35973158152, 232118471828, 1503949949896, 9786663686756, 63969334316680, 420026972347316, 2770499256109384, 18356852895660164 ]
[ "nonn" ]
A020820
[ 1, 2, 5, 9, 8, 8, 1, 5, 7, 6, 6, 9, 7, 4, 2, 4, 0, 9, 0, 7, 1, 5, 0, 5, 5, 1, 2, 0, 7, 8, 0, 6, 0, 0, 2, 0, 2, 7, 1, 9, 1, 7, 1, 0, 3, 9, 5, 6, 3, 0, 7, 1, 5, 1, 4, 4, 6, 1, 1, 1, 1, 6, 4, 7...
[ "nonn", "cons" ]
A010689
[ 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8...
[ "nonn", "cofr", "cons", "easy" ]
A047732
[ 1, 4, 12, 27, 51, 86, 134, 197, 277, 376, 496, 639, 807, 1002, 1226, 1481, 1769, 2092, 2452, 2851, 3291, 3774, 4302, 4877, 5501, 6176, 6904, 7687, 8527, 9426, 10386, 11409, 12497, 13652, 14876, 16171, 17539, 18982, 20502, 22101, 23781, ...
[ "nonn", "easy" ]
A069775
[ 0, 1, 2, 3, 4, 5, 7, 6, 8, 9, 10, 11, 12, 13, 17, 18, 16, 14, 15, 21, 19, 20, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 45, 46, 48, 49, 50, 44, 47, 42, 37, 38, 43, 39, 40, 41, 58, 59, 56, 51...
[ "nonn" ]
A201169
[ 1, 1, 1, 3, 7, 19, 59, 179, 615, 2141, 7853, 30179, 118663, 487581, 2050325, 8890743, 39593811, 180367655, 842738375, 4018170415, 19578229355, 97275623919, 492406520567, 2538806377419, 13312298342703, 70986151599775, 384532625928335, 2115147900599015 ]
[ "nonn" ]
A299241
[ 4, 5, 18, 20, 22, 23, 25, 31, 62, 74, 76, 77, 82, 84, 85, 90, 92, 93, 96, 97, 99, 104, 105, 107, 128, 129, 131, 135, 238, 246, 250, 252, 253, 294, 298, 300, 301, 306, 308, 309, 312, 313, 315, 326, 330, 332, 333, 338, 340...
[ "nonn", "easy" ]
A098771
[ 1, 2, 3, 4, 5, 6, 7, 8, 9, 38, 58, 66, 87, 568, 766, 2799, 6478, 6785, 26486, 36685, 36893, 64788, 66758, 67586, 69664, 77686, 276895, 467683, 474668, 488973, 548678, 587667, 658648, 666369, 668954, 839666, 939669, 958968, 968765, 2386698...
[ "base", "nonn" ]
A065523
[ 3, 7, 21, 31, 81, 93, 127, 217, 381, 400, 651, 889, 2667, 3937, 8191, 11811, 24573, 27559, 57337, 82677, 131071, 172011, 253921, 393213, 524287, 761763, 917497, 1040257, 1572861, 1777447, 2752491, 3120771, 3670009, 4063201, 5332341 ]
[ "nonn" ]
A035310
[ 1, 4, 12, 47, 170, 750, 3255, 16010, 81199, 448156, 2579626, 15913058, 102488024, 698976419, 4976098729, 37195337408, 289517846210, 2352125666883, 19841666995265, 173888579505200, 1577888354510786, 14820132616197924, 143746389756336180, 1438846957477988900 ]
[ "nonn", "nice" ]
A323349
[ 1, 1, 3, 3, 6, 3, 11, 3, 12, 6, 13, 3, 52, 3, 15, 30, 57, 3, 156, 3, 238, 129, 19, 3, 2221, 6, 21, 415, 3114, 3, 14921, 3, 12853, 1044, 25, 6219, 164743, 3, 27, 2220, 851476, 3, 954088, 3, 434106, 3326714, 31, 3, 2464872...
[ "nonn" ]
A242302
[ 9, 3, 4, 6, 3, 6, 3, 1, 3, 9, 9, 6, 4, 9, 8, 8, 9, 1, 1, 2, 4 ]
[ "nonn", "cons", "hard", "more" ]
A074901
[ 0, 2, 4, 6, 8, 9, 12, 26, 27, 34, 38, 48, 54, 60, 96, 150, 168, 180, 420, 438, 462, 468, 522, 540, 570, 828, 1320, 1782, 2130, 2142, 2280, 2370, 2448, 2700, 2760, 2790, 2808, 2922, 2952, 2982, 3012, 3402, 3570, 3582, 3972, 421...
[ "nonn", "base", "hard", "more" ]
A388391
[ 1, 0, 9, 0, 4, 9, 2, 5, 2, 0, 8, 2, 3, 0, 8, 3, 1, 5, 7, 7, 8, 3, 0, 6, 9, 4, 8, 1, 0, 5, 9, 9, 8, 2, 5, 9, 9, 8, 8, 8, 5, 9, 5, 8, 7, 3, 8, 4, 4, 4, 0, 2, 5, 7, 4, 7, 8, 4, 1, 3, 6, 2, 6, 7...
[ "nonn", "cons" ]
A199945
[ 2, 104, 660, 2474, 6604, 14696, 28490, 50448, 83092, 129642, 193292, 278240, 388258, 528328, 703140, 918330, 1179228, 1492584, 1864202, 2301584, 2811588, 3402266, 4081084, 4857344, 5738882, 6735720, 7856884, 9112842, 10513196, 12069800 ]
[ "nonn" ]
A207594
[ 25, 625, 1250, 5000, 18150, 70800, 263550, 1018700, 3824100, 14714500, 55475900, 212837550, 804627850, 3080577400, 11668031250, 44603903700, 169169362450, 645969220100, 2452350886150, 9356569191650, 35546345269650, 135539969562250 ]
[ "nonn" ]
A223977
[ 81, 6561, 186004, 2558848, 22935921, 153196498, 822895397, 3731866676, 14772553616, 52279545002, 168389072033, 500454038667, 1387317570171, 3618413260028, 8942729611918, 21066089007345, 47533740360251 ]
[ "nonn" ]
A308371
[ 1, 1, 4, 12, 42, 135, 500, 1797, 6885, 26612, 105561, 423734, 1726531, 7101261, 29486169, 123341520, 519422274, 2199966624, 9365714175, 40052639066, 171985425594, 741214499791, 3205096564624, 13901238793616, 60460193311425, 263627546862787, 1152207975128287 ]
[ "nonn" ]
A224354
[ 27, 216, 788, 2321, 5840, 13052, 26610, 50423, 90012, 152912, 249120, 391589, 596768, 885188, 1282094, 1818123, 2530028, 3461448, 4663724, 6196761, 8129936, 10543052, 13527338, 17186495, 21637788, 27013184, 33460536, 41144813, 50249376 ]
[ "nonn" ]
A136693
[ 1, 1, 2, 1, 4, 2, 2, 2, 4, 4, 4, 2, 4, 4, 2, 2, 2, 4, 2, 2, 4, 2, 2, 4, 4, 4, 2, 4, 4, 2, 4, 4, 2, 2, 2, 4, 4, 4, 2, 4, 4, 2, 2, 2, 4, 2, 2, 4, 2, 2, 4, 4, 4, 2, 2, 2, 4, 2, 2, 4, 4, 4, 2, 2...
[ "base", "easy", "nonn" ]
A321550
[ 1, -2047, 177148, -4196351, 48828126, -362621956, 1977326744, -8594130943, 31381236757, -99951173922, 285311670612, -743375186948, 1792160394038, -4047587844968, 8649804864648, -17600780175359, 34271896307634, -64237391641579, 116490258898220, -204899955368226, 35027947804611...
[ "sign", "mult" ]
A017328
[ 16777216, 56693912375296, 36520347436056580, 2386420683693101000, 52654090776777590000, 614787626176508500000, 4.722366482869645e+21, 2.6963771415920783e+22, 1.2341030701727614e+23, 4.7592031481425336e+23 ]
[ "nonn", "easy" ]
A068912
[ 1, 2, 4, 8, 14, 28, 48, 96, 164, 328, 560, 1120, 1912, 3824, 6528, 13056, 22288, 44576, 76096, 152192, 259808, 519616, 887040, 1774080, 3028544, 6057088, 10340096, 20680192, 35303296, 70606592, 120532992, 241065984, 411525376, 823050752, 1405035520...
[ "nonn", "walk", "easy" ]
A210808
[ 0, 14, 627, 39132, 4278728, 876726332, 346344682719, 267613524316520, 407810935423675000, 1.2319783702068192e+21, 7.403268643693556e+24, 8.87046363975786e+28, 2.122795932194449e+33 ]
[ "nonn" ]
A131547
[ 8, 33, 34, 275, 1385, 539, 8881, 22792, 90785, 107188, 704996, 1847533, 5756980, 9995031, 68353788 ]
[ "more", "nonn", "base" ]
A054056
[ 29, 31, 35, 37, 41, 47, 49, 59, 61, 71, 79, 85, 101, 119, 127, 139, 157, 161, 185, 191, 211, 229, 239, 269, 271, 301, 317, 335, 367, 371, 409, 421, 449, 479, 491, 535, 541, 581, 607, 629, 677, 679, 731, 751, 785, 829, 841, ...
[ "nonn", "easy" ]
A221147
[ 1, 3, 33, 498, 16533, 975330 ]
[ "nonn", "more" ]
A017651
[ 100000000000, 584318301411328, 70188843638032380, 1951354384207722500, 24986644000165536000, 197732674300000000000, 1.1270738569548768e+21, 5.062982072492058e+21, 1.8982985583354247e+22, 6.17592595348231e+22 ]
[ "nonn", "easy" ]
A110905
[ 2, 1, 1, 11, 1, 6, 41, 17, 8, 13, 14, 107, 84, 23, 4, 101, 13, 89, 211, 58, 83, 75, 260, 414, 35, 39, 871, 79, 27, 42, 915, 44, 349, 142, 249, 404, 140, 84, 1068, 693, 972, 236, 1571, 1200, 298, 423, 970, 183, 173, 659...
[ "nonn" ]
A083629
[ 8209165, 18696860, 19715001, 45681781, 45681782, 45681783, 46991724, 53280671, 55494960, 55616210, 55616211, 58285372, 62663646, 79245087, 101059334, 103078590, 105264397, 107986645, 108304062, 129423072, 129423073, 138606784, 159863007, 160301327, 160301328, 160524...
[ "nonn", "base" ]
A015452
[ 1, -1, 0, 1, -1, 0, 1, -1, 0, 1, -1, 0, 1, 0, -1, 1, 0, -1, 1, 0, -1, 1, 0, -1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, -1, 0, 1, -1, 0, 1, -1, 0, 1, -1, 0, 1, 0, -1, 1, 0, -1, 1, 0, -1, 1, 0, -...
[ "sign" ]
A108346
[ 1, 1, 2, 3, 3, 7, 7, 4, 4, 15, 6, 7, 15, 6, 7, 5, 5, 21, 31, 14, 31, 15, 12, 31, 21, 8, 15, 31, 14, 31, 31, 6, 6, 63, 14, 31, 9, 28, 31, 15, 14, 21, 8, 21, 31, 63, 15, 30, 63, 10, 21, 63, 28, 12, 63, 31, ...
[ "nonn" ]
A132389
[ 41280160361370, 65073487398990, 273596722858620, 305247832189230, 314546191059030, 334701417639750, 355340244780360, 552105775370310, 610954727181960, 660119078678220, 767920116273240, 776137769447880, 899316460923720, 957065931972990, 1333086396411840, 1490344945469310 ]
[ "nonn" ]
A224079
[ 1, 1, 4, 25, 191, 1981, 24515, 357393, 6014944, 114374701, 2429126965, 56973837097, 1462548099325, 40790689845725, 1228180553509096, 39706476998683810, 1371869867621426400, 50445615936195890000, 1.9670262962148732e+21, 8.107080218074751e+22 ]
[ "nonn" ]
A315831
[ 1, 6, 7, 10, 14, 17, 22, 23, 26, 34, 36, 44, 42, 43, 52, 51, 58, 58, 61, 74, 74, 84, 77, 76, 90, 85, 96, 91, 94, 114, 112, 124, 110, 109, 128, 119, 134, 124, 127, 154, 150, 164, 143, 142, 166, 153, 172, 157, 160, 194 ]
[ "nonn" ]
A211724
[ 36, 66, 104, 178, 280, 476, 768, 1324, 2208, 3880, 6672, 11928, 21008, 38048, 68144, 124512, 225456, 414288, 755312, 1392784, 2549872, 4711856, 8647920, 16000432, 29410032, 54455152, 100180464, 185574000, 341574128, 632894192, 1165280240 ]
[ "nonn" ]
A149682
[ 1, 1, 5, 17, 67, 261, 1119, 4789, 20925, 91981, 411389, 1859025, 8471171, 38770881, 178483711, 826512465, 3847717971, 17976662233, 84242272527, 396035107669, 1867986856623, 8835632220835, 41886130203837, 198962701662905, 947045751950673, 4517036721777827, 21583042...
[ "nonn", "walk" ]
A080048
[ 1, 7, 34, 182, 1107, 7773, 62212, 559948, 5599525, 61594835, 739138086, 9608795202, 134523132919, 2017846993897, 32285551902472, 548854382342168, 9879378882159176, 187708198761024540, 3754163975220491300 ]
[ "nonn" ]
A187833
[ 1, 3, 5, 6, 9, 10, 12, 14, 16, 17, 19, 21, 23, 25, 27, 28, 30, 32, 34, 36, 38, 39, 41, 43, 45, 46, 49, 50, 52, 54, 56, 58, 59, 61, 63, 65, 67, 68, 70, 72, 74, 76, 78, 79, 81, 83, 85, 87, 89, 90, 92, 94, 96, 98,...
[ "nonn" ]
A204982
[ 2, 3, 4, 5, 4, 4, 4, 6, 6, 6, 6, 5, 5, 5, 6, 8, 7, 7, 7, 6, 8, 12, 6, 8, 10, 7, 10, 8, 14, 7, 8, 10, 6, 7, 9, 10, 12, 10, 9, 6, 8, 8, 15, 12, 6, 6, 6, 8, 11, 11, 7, 7, 17, 10, 12, 8, 7, 16, 9, 9 ]
[ "nonn" ]
A228355
[ 2, 3, 5, 7, 1, 1, 3, 1, 7, 1, 9, 1, 3, 2, 9, 2, 1, 3, 7, 3, 1, 4, 3, 4, 7, 4, 3, 5, 9, 5, 1, 6, 7, 6, 1, 7, 3, 7, 9, 7, 3, 8, 9, 8, 7, 9, 1, 0, 1, 3, 0, 1, 7, 0, 1, 9, 0, 1, 3, 1, 1, 7, 2, 1...
[ "nonn", "base", "cons" ]
A165898
[ 0, 0, 2, 5, 5, 7, 14, 23, 24, 20, 33, 52, 39, 49, 75, 106, 68, 93, 95, 155, 140, 121, 161, 234, 175, 156, 225, 294, 203, 285, 279, 424, 363, 272, 420, 534, 333, 361, 533, 645, 410, 553, 473, 748, 765, 575, 658, 1004, 686...
[ "nonn" ]
A049660
[ 0, 1, 18, 323, 5796, 104005, 1866294, 33489287, 600940872, 10783446409, 193501094490, 3472236254411, 62306751484908, 1118049290473933, 20062580477045890, 360008399296352000, 6460088606857291000, 115921586524134870000, 2.0801284688275704e+21 ]
[ "nonn", "easy" ]
A082136
[ 0, 1, 10, 78, 560, 3880, 26400, 177632, 1185280, 7853184, 51699200, 338331136, 2201948160, 14258137088, 91894620160, 589744496640, 3770069811200, 24015941435392, 152494553825280, 965472423378944, 6096346179174400 ]
[ "easy", "nonn" ]
A208436
[ 1, 3, 8, 14, 33, 64, 79, 126, 183, 379, 795, 1935, 2292, 3296, 4805, 6620, 15323, 19187, 20105, 36719, 46589, 185013, 220571, 259501, 516200, 880694, 1493008, 1663325, 1793281, 3206674, 6488753, 14145077, 22653912, 33742399, 65336924, 70354407, ...
[ "nonn", "hard", "nice" ]
A075876
[ 0, 2, 4, 12, 52, 212, 852, 3412, 13652, 54612, 218452, 873812, 3495252, 13981012, 55924052, 223696212 ]
[ "nonn", "more" ]
A072295
[ 1, 87178291200, 121645100408832000, 1.5511210043330986e+25, 2.631308369336935e+35, 8.159152832478977e+47 ]
[ "base", "nonn" ]
A015718
[ 0, 1, 0, 1, 1, 1, 1, 2, 1, 1, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 4, 3, 4, 4, 4, 3, 4, 4, 5, 4, 5, 5, 5, 5, 5, 5, 6, 6, 6, 7, 7, 7, 5, 6, 6, 7, 8, 8, 8, 9, 9, 9, 7, 7, 8, 9, 9, 9, 10, 10, ...
[ "nonn", "tabl" ]
A002319
[ 1, 2, 6, 12, 60, 168, 360, 720, 2520, 20160, 29120, 443520, 1944, 126000 ]
[ "nonn", "nice", "more" ]
A045347
[ 2, 5, 7, 11, 13, 19, 23, 37, 41, 47, 53, 61, 67, 79, 83, 89, 97, 103, 107, 109, 131, 137, 139, 149, 151, 163, 167, 173, 179, 181, 191, 193, 223, 229, 233, 251, 257, 263, 271, 277, 293, 307, 313, 317, 331, 347, 349 ]
[ "nonn", "easy" ]
A181378
[ 1, 14, 107, 1006, 9550, 92743, 913905, 9060358, 90216532 ]
[ "nonn", "more", "base" ]
A314245
[ 1, 5, 11, 17, 23, 29, 33, 39, 45, 52, 56, 62, 68, 72, 80, 85, 90, 96, 101, 107, 114, 118, 124, 130, 135, 141, 147, 153, 157, 164, 169, 175, 181, 186, 192, 197, 203, 209, 215, 220, 225, 231, 238, 242, 249, 254, 258, 266, ...
[ "nonn" ]
A298311
[ 1, 3, 7, 16, 32, 61, 112, 197, 336, 560, 912, 1456, 2287, 3536, 5392, 8123, 12096, 17824, 26016, 37632, 53984, 76848, 108601, 152432, 212592, 294704, 406201, 556864, 759488, 1030784, 1392496, 1872784, 2508048, 3345184, 4444384, 5882747, 7758736...
[ "nonn", "easy" ]
A215495
[ 1, 1, 1, 3, 3, 5, 3, 7, 5, 9, 5, 11, 7, 13, 7, 15, 9, 17, 9, 19, 11, 21, 11, 23, 13, 25, 13, 27, 15, 29, 15, 31, 17, 33, 17, 35, 19, 37, 19, 39, 21, 41, 21, 43, 23, 45, 23, 47, 25, 49, 25, 51, 27, 53, 27, 5...
[ "nonn", "easy" ]