id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A388129
[ 1, 5, 34, 253, 1966, 15674, 127100, 1043165, 8639350, 72053110, 604304636, 5091508690, 43061767516, 365373061772, 3108708313744, 26513185631965, 226595976712870, 1940187521222222, 16639766719758764, 142918245750677150, 1229139650429019000, 10583595038040435000 ]
[ "nonn", "changed" ]
A135141
[ 1, 2, 4, 3, 8, 5, 6, 9, 7, 17, 16, 11, 10, 13, 19, 15, 12, 35, 18, 33, 23, 21, 14, 27, 39, 31, 25, 71, 34, 37, 32, 67, 47, 43, 29, 55, 22, 79, 63, 51, 20, 143, 26, 69, 75, 65, 38, 135, 95, 87, 59, 111, 30, 45, ...
[ "nonn", "look" ]
A227250
[ 1, 2, 6, 42, 390, 4698, 69174 ]
[ "nonn", "more" ]
A137203
[ 1, 3, 5, 7, 8, 9, 10, 10, 11, 11, 12, 12, 13, 13, 13, 13, 14, 14, 14, 14, 15, 15, 15, 15, 15, 16, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 17, 17, 17, 17, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 19, 19, 19, ...
[ "nonn" ]
A017580
[ 16777216, 281474976710656, 232218265089212400, 16777216000000000000, 390877006486250200000, 4.722366482869645e+21, 3.71332624731955e+22, 2.15671155821681e+23, 1e+24, 3.895975992546976e+24 ]
[ "nonn", "easy" ]
A071466
[ 1, 1, 2, 0, 1, 1, 2, 0, 3, 1, 1, 0, 3, 1, 2, 2, 4, 3, 2, 2, 4, 3, 5, 2, 2, 3, 5, 2, 2, 1, 3, 0, 1, 1, 3, 0, 2, 1, 1, 0, 2, 1, 4, 5, 5, 4, 2, 7, 5, 6, 4, 1, 2, 0, 1, 1, 2, 0, 3, 1, 1, 0, 3, 8...
[ "nonn" ]
A168752
[ 1, 27, 702, 18252, 474552, 12338352, 320797152, 8340725952, 216858874752, 5638330743552, 146596599332352, 3811511582641152, 99099301148669950, 2576581829865419000, 66991127576500890000, 1.741769316989023e+21 ]
[ "nonn", "easy" ]
A367517
[ 1, 9, 8820, 3756261600, 1808353823416358400, 2.0394348902067822e+30, 9.701283544768145e+45, 3.1856501666064227e+65 ]
[ "nonn" ]
A162854
[ 3, 12, 1, 6, 51, 4, 63, 192, 27, 204, 25, 2, 19, 252, 3, 12, 771, 108, 13, 102, 819, 100, 831, 64, 11, 76, 9, 126, 1011, 12, 1023, 3072, 51, 3084, 385, 54, 435, 52, 447, 3264, 411, 3276, 409, 50, 403, 3324, 51, 4, 259, ...
[ "base", "nonn" ]
A156212
[ 1, 2, 26, 732, 116390, 74067484, 206309321188, 2332635556428984, 108379291296448430000, 2.041763065242054e+25, 1.5592143220454382e+31 ]
[ "nonn" ]
A140622
[ 109, 229, 349, 421, 541, 661, 709, 1021, 1549, 1669, 1789, 1861, 2221, 2269, 2749, 3061, 3109, 3229, 3469, 3541, 4621, 4789, 4909, 5101, 5701, 5869, 6229, 6469, 6661, 6781, 6949, 7741, 7789, 8101, 8221, 8461, 8821, 9349, 9661, 9781, 990...
[ "nonn", "easy" ]
A054690
[ 7, 19, 43, 73, 73, 349, 349, 349, 349, 349, 349, 661, 661, 661, 661, 661, 661, 661, 661, 8629, 8629, 8629, 8629, 13399, 13399, 13399, 14629, 14629, 24421, 24421, 24421, 24421, 24421, 24421, 24421, 24421, 24421, 24421, 24421, 24421, 2442...
[ "nonn" ]
A080067
[ 1, 2, 5, 4, 13, 11, 12, 10, 9, 36, 33, 34, 29, 28, 35, 30, 32, 27, 25, 31, 26, 24, 23, 106, 102, 103, 94, 93, 104, 95, 97, 83, 81, 96, 82, 80, 79, 105, 98, 99, 85, 84, 101, 89, 92, 78, 75, 90, 76, 71, 70, 100, 86...
[ "nonn" ]
A091172
[ 0, 3, 20, 153, 1198, 9805, 83022, 720033, 6356346, 56881516, 514760166, 4700997055, 43258200645 ]
[ "nonn", "more" ]
A227040
[ 1, 4562497, 20816383437505, 94974707800845120000, 4.3332191439191945e+26, 1.9770303677692087e+33, 9.020197098885846e+39, 4.11546312232705e+46 ]
[ "nonn", "easy" ]
A326064
[ 117, 775, 10309, 56347, 88723, 2896363, 9597529, 12326221, 12654079, 25774633, 29817121, 63455131, 105100903, 203822581, 261019543, 296765173, 422857021, 573332713, 782481673, 900952687, 1129152721, 3350861677, 3703086229, 7395290407, 9347001661, 9350506057 ]
[ "nonn" ]
A059755
[ 65, 868591084757, 6979302951885, 6157577986646405, 8052956026592517, 8052956206592517, 8650327689541457, 8650349867341457, 619431353040137000, 619631153042134900, 631688638047992300, 633288858025996200, 633488632647994100, 653488856225994100 ]
[ "nice", "nonn", "base" ]
A110611
[ 1, 4, 11, 21, 37, 58, 87, 123, 169, 224, 291, 369, 461, 566, 687, 823, 977, 1148, 1339, 1549, 1781, 2034, 2311, 2611, 2937, 3288, 3667, 4073, 4509, 4974, 5471, 5999, 6561, 7156, 7787, 8453, 9157, 9898, 10679, 11499, 12361, 13264, 14...
[ "nonn", "easy" ]
A320031
[ 1, 1, 1, 1, 2, 1, 1, 3, 5, 1, 1, 4, 13, 16, 1, 1, 5, 25, 79, 65, 1, 1, 6, 41, 226, 633, 326, 1, 1, 7, 61, 493, 2713, 6331, 1957, 1, 1, 8, 85, 916, 7889, 40696, 75973, 13700, 1, 1, 9, 113, 1531, 18321, 157781, 73252...
[ "nonn", "tabl" ]
A134713
[ 1, 1, 2, 3, 8, 11, 12, 23, 52, 79, 96, 115, 508, 593, 1264, 2187, 2264, 3199, 4234, 4403, 9668, 9919, 11190, 19913, 21676, 23183, 44470, 86215, 110474, 132019, 216060, 756807, 859400, 1257753, 1398234, 2976185, 3021340, 6972555, 13466878 ]
[ "nonn" ]
A238896
[ 0, 1, 2, 3, 5, 6, 8, 9, 10, 13, 15, 20, 21, 24, 25, 27, 32, 34, 41, 44, 46, 56, 59, 70, 74, 76, 86, 92, 99, 115, 116, 129, 138, 145, 156, 164, 169, 171, 193, 199, 222, 223, 242, 246, 268, 270, 278, 295, 304, 334, 343...
[ "nonn" ]
A001846
[ 1, 9, 41, 129, 321, 681, 1289, 2241, 3649, 5641, 8361, 11969, 16641, 22569, 29961, 39041, 50049, 63241, 78889, 97281, 118721, 143529, 172041, 204609, 241601, 283401, 330409, 383041, 441729, 506921, 579081, 658689, 746241, 842249, 947241, 1061761,...
[ "nonn", "easy" ]
A045222
[ 7, 11, 27, 35, 38, 39, 42, 47, 51, 55, 58, 59, 66, 71, 82, 86, 107, 111, 127, 135, 138, 139, 142, 147, 175, 178, 179, 190, 193, 194, 195, 198, 199, 202, 210, 213, 214, 217, 222, 227, 235, 238, 239, 242, 247, 251, 255, 258,...
[ "nonn", "base" ]
A312222
[ 1, 4, 8, 14, 12, 22, 24, 28, 32, 38, 38, 48, 46, 54, 68, 50, 64, 74, 72, 76, 92, 78, 94, 88, 98, 110, 112, 102, 116, 118, 124, 124, 144, 130, 134, 144, 154, 146, 176, 142, 164, 170, 172, 176, 204, 162, 194, 192, 194, 2...
[ "nonn" ]
A293242
[ 1, 2, 18, 1157484 ]
[ "nonn", "more" ]
A203753
[ 1, 1, 36, 144, 21609, 194481, 65804544, 1052872704, 633623960025, 15840599000625, 14897346862777344, 536304487059984400, 726332080998489100000, 3.5590271968925966e+22, 6.560841803521286e+25 ]
[ "nonn" ]
A325206
[ 0, 1, 2, 9, 64, 625, 7776, 117649, 2097152, 43046712, 999999180, 25937373990, 743005653984, 23297946618804, 793707788417544, 29192570114517810, 1152902963147295400, 48660197610533100000, 2.1858564664206376e+21, 1.0412418901956249e+23, 5.242691958381764e+24 ]
[ "easy", "nonn" ]
A370398
[ 0, 1, 0, 1, 1, 0, 1, 2, 1, 0, 1, 11, 5, 1, 0, 4, 31, 11, 9, 1, 0, 4, 1, 69, 21, 19, 1, 0, 4, 101, 49, 829, 94, 34, 1, 0, 4, 2783, 3733, 56069, 25367, 551, 69, 1, 0, 32, 13439, 21517, 389573, 1543163, 14011, 565, ...
[ "nonn", "frac", "tabl" ]
A245397
[ 1, 1, 1, 1, 1, 3, 1, 1, 4, 10, 1, 1, 6, 27, 35, 1, 1, 10, 93, 256, 126, 1, 1, 18, 381, 2716, 3125, 462, 1, 1, 34, 1785, 36628, 127905, 46656, 1716, 1, 1, 66, 9237, 591460, 7120505, 8848236, 823543, 6435, 1, 1, 130, 51033...
[ "nonn", "tabl" ]
A172380
[ 1, 0, 1, 0, 1, 1, 0, 2, 3, 1, 0, 5, 10, 6, 1, 0, 14, 36, 31, 10, 1, 0, 42, 137, 156, 75, 15, 1, 0, 132, 544, 787, 510, 155, 21, 1, 0, 429, 2235, 4017, 3331, 1380, 287, 28, 1, 0, 1430, 9445, 20809, 21405, 11411, 325...
[ "nonn", "tabl" ]
A357709
[ 1, 0, 0, 1, 0, 1, 1, 1, 2, 2, 4, 3, 6, 6, 9, 11, 13, 18, 21, 28, 32, 44, 49, 65, 76, 96, 114, 141, 170, 204, 250, 295, 361, 425, 516, 606, 734, 858, 1031, 1210, 1440, 1690, 2000, 2347, 2759, 3240, 3786, 4441, 5174, 605...
[ "nonn" ]
A247261
[ 5625, 50625, 62187890625, 453097265625, 684420119384765600, 4030118984619140600, 7.501588188366852e+24, 3.5596572549171293e+25, 8.191319826242005e+31, 3.1193228324210092e+32, 8.913784081519417e+38 ]
[ "nonn", "base" ]
A032501
[ 1, 2, 3, 6, 7, 10, 14, 15, 23, 34, 43, 50, 59, 79, 111, 114, 127, 142, 143, 145, 154, 159, 181, 187, 342, 474, 490, 510, 766, 789, 843, 1062, 1370, 1711, 2070, 5007, 5250, 5394, 8483, 8587, 8871, 8929, 9682, 11146, 12402, 1358...
[ "nonn", "hard", "changed" ]
A386582
[ 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3...
[ "nonn" ]
A102919
[ 1, 3, 8, 24, 95, 472, 3010, 22508, 198157, 1969757, 22006039, 272436985, 3691859826, 54696947677, 872698586012, 15055534230363, 276756250035637, 5449734493500830, 113510195694700700, 2512765185249336300 ]
[ "nonn" ]
A364632
[ 1, 4, 727, 84479, 9935791, 1204757533, 141186107223, 16785795917908, 1990875917805852, 235938457227641120, 27983642750014403000, 3.3177892940058717e+21, 3.934028907739823e+23, 4.6647231741875686e+25, 5.531042470843073e+27, 6.558319590355717e+29 ]
[ "nonn" ]
A056158
[ -4, -2, -4, 2, -20, 86, -532, 3706, -29668, 266990, -2669924, 29369138, -352429684, 4581585862, -64142202100, 962133031466, -15394128503492, 261700184559326, -4710603322067908, 89501463119290200, -1790029262385804300 ]
[ "sign", "easy" ]
A128478
[ 7376, 5013752, 10457948644 ]
[ "nonn", "more", "bref" ]
A273362
[ 29, 84, 225, 396, 569, 744, 921, 1289, 1824, 2361, 2900, 3441, 3984, 4529, 5076, 5625, 6176, 6729, 7284, 7841, 8400, 8961, 9524, 10649, 12336, 14025, 15716, 17409, 19104, 20801, 22500, 24201, 25904, 27609, 29316, 31025, 32736, 34449 ]
[ "nonn", "base" ]
A366066
[ 0, 1, 1, 2, 2, 2, 3, 2, 3, 3, 3, 4, 3, 4, 3, 4, 4, 4, 5, 4, 5, 4, 5, 4, 5, 5, 5, 5, 5, 6, 5, 6, 5, 6, 5, 6, 6, 6, 6, 6, 6, 6, 7, 6, 7, 6, 7, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 8, 7, 8, 7, 8...
[ "nonn", "easy" ]
A009001
[ 1, 1, -1, -3, 1, 5, -1, -7, 1, 9, -1, -11, 1, 13, -1, -15, 1, 17, -1, -19, 1, 21, -1, -23, 1, 25, -1, -27, 1, 29, -1, -31, 1, 33, -1, -35, 1, 37, -1, -39, 1, 41, -1, -43, 1, 45, -1, -47, 1, 49, -1, -51, 1, 53, ...
[ "sign", "easy", "nice" ]
A156013
[ 2, 5, 13, 17, 53, 73, 97, 127, 173, 193, 223, 227, 283, 337, 487, 503, 557, 643, 647, 743, 797, 827, 887, 997, 1033, 1187, 1193, 1237, 1483, 1553, 1583, 1613, 1663, 1693, 2027, 2143, 2203, 2273, 2297, 2437, 2467, 2617, 2777, 2833,...
[ "nonn", "easy" ]
A340122
[ 9, 21, 27, 63, 81, 189, 243, 323, 329, 351, 377, 423, 451, 567, 729, 783, 861, 891, 963, 1081, 1701, 1743, 1819, 1891, 1967, 2033, 2187, 2211, 2871, 2889, 2961, 3321, 3653, 3807, 3827, 4089, 4181, 5103, 5229, 5671, 5777, 5901, 6561,...
[ "nonn" ]
A034775
[ 1, 3, 4, 10, 17, 62, 205, 894, 4147, 21183, 115977, 678700, 4213599, 27644849, 190899360, 1382960323, 10480142149, 82864878205, 682076806161, 5832742247416, 51724158235786, 474869816388707, 4506715738447325 ]
[ "nonn" ]
A055871
[ 1, 0, -1, -2, -4, 0, 44, 288, 1276, 0, -96976, -1707552, -19298224, 0, 10054374704, 465280599168, 13714167096256, 0, -48973290700730180, -5936600776414759000, -457851294761126400000, 0, 1.120636829057333e+25, 3.5567572074297505e+27 ]
[ "sign", "easy" ]
A380047
[ 1, 3, 12, 45, 132, 135, -702, 6573, 111576, -634581, -19482690, 104641713, 5438689380, -21226768017, -2173847986086, 3249084663765, 1168505502268848, 2167390942251219, -807540016560944800, -5035872168333505000, 693302551375611400000, 8.209523136574257e+21 ]
[ "sign" ]
A216192
[ 9, 12, 28, 28, 28, 28, 28, 31 ]
[ "nonn", "hard", "more", "base" ]
A270147
[ 1176, 4126368, 5750902944, 6697695002208, 7142783643783792, 7232246139319439000, 7.07600757974924e+21, 6.756572506861579e+24, 6.33522205293924e+27, 5.856894219696862e+30 ]
[ "nonn" ]
A060182
[ 1, 5, 13, 28, 58, 118, 238, 478, 958, 1918, 3838, 7678, 15358, 30718, 61438, 122878, 245758, 491518, 983038, 1966078, 3932158, 7864318, 15728638, 31457278, 62914558, 125829118, 251658238, 503316478, 1006632958, 2013265918 ]
[ "nonn", "easy" ]
A183709
[ 11208812712, 771732813754128, 52731638795200910000, 3.6089617530732097e+24, 2.4690768971240276e+29, 1.6893652701074804e+34 ]
[ "nonn" ]
A241297
[ 6, 4, 7, 4, 0, 3, 2, 9, 6, 4, 6, 6, 9, 7, 0, 6, 7, 9, 9, 7, 3, 8, 6, 6, 2, 5, 1, 7, 9, 3, 9, 0, 2, 7, 4, 9, 3, 5, 5, 2, 4, 6, 5, 7, 8, 1, 5, 5, 6, 6, 0, 5, 4, 7, 1, 6, 8, 1, 8, 4, 5, 3, 5, 6...
[ "nonn", "cons", "fini" ]
A096250
[ 1, 1, 2, 9, 1, 7, 6, 2, 8, 2, 0, 5, 0, 2, 6, 8, 4, 7, 4, 9, 3, 8, 2, 9, 8, 5, 6, 6, 7, 0, 3, 9, 0, 5, 3, 6, 8, 1, 4, 2, 5, 0, 0, 5, 4, 0, 3, 7, 4, 3, 9, 4, 6, 4, 9, 1, 0, 7, 2, 7, 6, 3, 2, 2...
[ "nonn", "cons" ]
A383051
[ 1, 2, 5, -1, -116, 984, 16400, -788418, 5474016, 941115360, -51647682648, -264087895512, 244846563852864, -16953959408998080, -436871956049596800, 219647419965976400000, -2.0283048895473275e+22, -8.774652779748997e+23, 5.4529790437073954e+26 ]
[ "sign" ]
A016974
[ 15625, 1771561, 24137569, 148035889, 594823321, 1838265625, 4750104241, 10779215329, 22164361129, 42180533641, 75418890625, 128100283921, 208422380089, 326940373369, 496981290961, 735091890625, 1061520150601, 1500730351849, 2081951752609, 2839760855281, 3814697265625 ]
[ "nonn", "easy" ]
A283214
[ 1, 10, 100, 1011, 10001, 101110, 1000100, 10111011, 100010001, 1011101110, 10001000100, 101110111011, 1000100010001, 10111011101110, 100010001000100, 1011101110111011, 10001000100010000, 101110111011101100, 1000100010001000100, 10111011101110110000 ]
[ "nonn", "easy" ]
A081850
[ 3, 2, 3, 13, 1, 1, 4, 2, 2, 9, 2, 2, 1, 1, 7, 3, 7, 3, 4, 3, 1, 1, 2, 4, 5, 10, 5, 13, 1, 1, 14, 8, 5, 2, 10, 11, 1, 1, 6, 2, 2, 17, 2, 2, 1, 1, 3, 6, 16, 5, 3, 4, 1, 1, 2, 4, 7, 9, 4, 3, 1, 1, ...
[ "nonn" ]
A215503
[ 7, 1, 19, 13, 111, 121, 763, 1093, 5575, 9697, 42099, 84173, 324591, 717081, 2538331, 6023173, 20049671, 50079553, 159514963, 413387789, 1275778031, 3394968121, 10242581819, 27780675397, 82461727687, 226743641121, 665232392883, 1847286687181, 5374409263215 ]
[ "nonn", "easy" ]
A293231
[ 1, 2, 2, 12, 2, 36, 2, 120, 6, 60, 2, 5400, 2, 360, 30, 25200, 2, 56700, 2, 21000, 180, 840, 2, 23814000, 10, 504, 630, 50400, 2, 661500, 2, 554400, 420, 132, 300, 392931000, 2, 792, 252, 242550000, 2, 24948000, 2, 2772000, 2205...
[ "nonn", "base" ]
A245028
[ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14, 15, 16, 18, 19, 20, 21, 24, 26, 28, 30, 35, 36, 37, 38, 39, 40, 42, 45, 48, 52, 56, 57, 60, 61, 63, 65, 70, 72, 74, 76, 78, 80, 84, 90, 91, 95, 104, 105, 111, 112, 114...
[ "nonn", "fini", "full" ]
A389809
[ 3, 5, 5, 7, 7, 7, 11, 11, 11, 11, 13, 13, 13, 13, 13, 17, 17, 17, 17, 17, 17, 19, 19, 19, 19, 19, 19, 19, 23, 23, 23, 23, 23, 23, 23, 23, 29, 29, 29, 29, 29, 29, 29, 29, 29, 31, 31, 31, 31, 31, 31, 31, 31, 31, ...
[ "nonn", "tabl" ]
A117197
[ 0, 343, 17576, 250047, 1906624, 9938375, 40001688, 133432831, 385828352, 997002999, 2352637000, 5150827583, 10590025536, 20638466407, 38409197624, 68669157375, 118515478528, 198257271191, 322546580712, 511808023999 ]
[ "nonn", "easy" ]
A372169
[ 1, 0, 1, 1, 4, 7, 24, 69, 303, 1487, 10275, 92899, 1157109, 19534822, 447074367, 13764681083, 567227701549, 31139379910949 ]
[ "nonn", "more" ]
A139937
[ 5, 89, 149, 281, 389, 401, 521, 569, 641, 701, 881, 941, 1049, 1109, 1229, 1601, 1709, 1721, 1901, 1949, 2069, 2081, 2549, 2609, 2621, 2729, 2909, 3041, 3089, 3329, 3449, 3461, 3701, 3881, 3929, 3989, 4001, 4229, 4289, 4421, 4481, 502...
[ "nonn", "easy" ]
A305487
[ 5, 157, 295, 125, 7007, 23229, 52124, 581383, 2463954, 8570618, 56143574, 267901337, 1116868133, 6024191561, 29624539835, 134241410418, 674874922277, 3322616624721, 15652901052092, 76798796724976, 376381323915795 ]
[ "nonn" ]
A278048
[ 2, 3, 30, 21, 252, 396, 6435, 858, 2042040, 3527160, 5290740, 9360540, 1029659400, 617795640, 116454478140, 1061790830100, 283144221360, 10644519600, 14060345939640, 14060345939640, 2960272834318800, 130015019445168, 4653946718775900, 43747099156493460 ]
[ "nonn", "frac" ]
A346353
[ 944383, 953139, 953414, 985453, 1118585, 1151438, 1185375, 1198879, 1206546, 1209912, 1216569, 1217172, 1218912, 1223321, 1225398, 1234631, 1241834, 1251195, 1251406, 1252123, 1259685, 1265563, 1265594, 1267937, 1275375, 1281736, 1295418, 1297697, 1298088 ]
[ "nonn" ]
A085144
[ 0, 0, 1, 0, 2, -1, 1, 0, 3, -2, 0, 1, 2, -1, 1, 0, 4, -3, -1, 2, 1, 0, 2, -1, 3, -2, 0, 1, 2, -1, 1, 0, 5, -4, -2, 3, 0, 1, 3, -2, 2, -1, 1, 0, 3, -2, 0, 1, 4, -3, -1, 2, 1, 0, 2, -1, 3, -2, 0, 1, ...
[ "sign", "easy" ]
A244556
[ 2, 3, 5, 7, 43, 59, 67, 79, 97, 109, 113, 137, 163, 167, 179, 199, 227, 269, 283, 293, 313, 317, 337, 349, 367, 379, 397, 409, 419, 439, 463, 479, 487, 499, 523, 557, 569, 607, 617, 619, 643, 673, 677, 683, 709, 719, 727, ...
[ "nonn", "base" ]
A371436
[ 1, 3, 12, 49, 179, 441, -860, -23634, -229246, -1705649, -10757370, -57800600, -246084657, -551185526, 3612960360, 66196180728, 641858169138, 4911870929096, 31792139997384, 172691510260794, 711428107177975, 1066704835555530, -18659356513414560 ]
[ "sign" ]
A111089
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[ "nonn" ]
A196054
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[ "nonn" ]
A373788
[ 1, 2, 3, 4, 9, 10, 11, 12, 24, 25, 35, 36, 51, 61, 62, 73, 85, 91, 99, 114, 126, 127, 139, 148, 155, 168, 177, 188, 204, 213, 220, 229, 236, 243, 272, 281, 294, 301, 320, 327, 335, 350, 361, 374, 387, 392, 413, 418, 423,...
[ "nonn" ]
A018358
[ 1, 3, 5, 15, 17, 51, 85, 255 ]
[ "nonn", "fini", "full", "easy" ]
A012602
[ 2, -152, 469152, -4992585600, 302439240061440, -25272513424650887000, 8.822979791130082e+24, -2.618340641057955e+30 ]
[ "sign" ]
A035657
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[ "nonn" ]
A224891
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[ "nonn" ]
A166317
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[ "easy", "nonn", "tabl" ]
A242441
[ 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 18, 20, 21, 24, 28, 30, 32, 39, 40, 48, 50, 56, 60, 63, 70, 72, 80, 88, 102, 110, 112, 120, 126, 156, 168, 204, 213, 220, 232, 240, 252, 272, 273, 280, 312, 372, 378, 408, 520, 52...
[ "nonn" ]
A311680
[ 1, 4, 8, 13, 16, 19, 20, 22, 32, 38, 44, 46, 46, 53, 54, 56, 59, 68, 76, 76, 84, 83, 86, 91, 90, 96, 110, 110, 118, 120, 114, 121, 120, 126, 131, 146, 154, 156, 160, 151, 152, 155, 156, 168, 188, 186, 198, 194, 188, 19...
[ "nonn" ]
A111797
[ 1, 1, 2, 5, 1, 16, 4, 56, 17 ]
[ "nonn", "tabf" ]
A186439
[ 38, 100, 200, 300, 400, 462, 500, 538, 600, 700, 800, 900, 962, 1000, 1038, 1100, 1200, 1300, 1400, 1462, 1500, 1538, 1600, 1700, 1800, 1900, 1962, 2000, 2038, 2100, 2200, 2300, 2400, 2462, 2500, 2538, 2600, 2700, 2800, 2900, 2962, 30...
[ "nonn", "base", "easy" ]
A273535
[ 1, 5, 17, 65, 241, 917, 3473, 13145, 50593, 198689, 779069, 3087701, 12314561, 49200165, 196648533, 785726841 ]
[ "nonn", "more" ]
A342331
[ 1, 1, 1, 3, 2, 2, 5, 4, 3, 9, 6, 4, 14, 9, 8, 22, 15, 11, 37, 24, 21, 58, 40, 30, 95, 67, 53, 157, 114, 85, 264, 187, 147, 428, 315, 244, 732, 527, 410, 1207, 892, 681, 2034, 1490, 1155, 3416, 2508, 1927, 5731, 4215, ...
[ "nonn" ]
A359980
[ 1, 0, -1, -1, 0, 1, -1, 0, 1, 1, 0, -2, 0, 1, 1, 0, -1, 1, -1, -1, 0, 1, 1, -1, 1, 0, -1, -2, 0, 3, 1, -1, -2, 1, 1, -2, -1, 1, 2, 0, -1, 0, 0, 0, 0, 1, 0, -1, -1, 1, 1, -3, -1, 2, 3, -1, -2, 2, 1, ...
[ "sign", "look" ]
A168119
[ 0, 1, 1025, 88575, 2097154, 24414065, 181398531, 988663375, 4294967300, 15690529809, 50000000005, 142655835311, 371504185350, 896080197025, 2024782584839, 4324877929695, 8796093022216, 17135948153825 ]
[ "nonn", "easy" ]
A095965
[ 821, 157547, 340791, 405109, 405111, 409732, 419101 ]
[ "nonn" ]
A132102
[ 1, 1, 3, 7, 35, 193, 1799, 19311, 254143, 3828921, 65486307, 1249937335, 26353147811, 608142583137, 15247011443103, 412685556939751, 11993674252049648, 372509404162520640, 12313505313357314000, 431620764875678500000, 1.5991549339008732e+22 ]
[ "nonn" ]
A121893
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[ "easy", "nonn" ]
A386409
[ 1, 1, 2, 2, 2, 4, 2, 4, 3, 4, 3, 7, 5, 5, 6, 6, 4, 6, 4, 9, 8, 5, 2, 13, 4, 8, 3, 9, 4, 14, 3, 6, 7, 8, 12, 11, 3, 7, 10, 17, 5, 16, 6, 9, 10, 5, 2, 19, 7, 8, 10, 13, 3, 6, 11, 18, 11, 7, 3, 27, 5...
[ "nonn" ]
A011308
[ 1, 3, 1, 7, 9, 8, 0, 6, 2, 9, 2, 1, 3, 0, 0, 2, 2, 3, 9, 7, 7, 5, 9, 1, 7, 7, 4, 1, 9, 8, 8, 2, 9, 6, 2, 7, 7, 0, 8, 2, 9, 7, 6, 7, 3, 9, 9, 6, 1, 3, 7, 4, 6, 4, 3, 5, 9, 2, 4, 6, 6, 7, 2, 9...
[ "nonn", "cons", "easy" ]
A292028
[ 1, 64, 888, 9472, 76160, 556032, 3605504, 22224896, 128471040, 719708160, 3874455552, 20416954368, 104732426240, 528985096192, 2620635217920, 12831147687936, 61916622880768, 296036213981184, 1399459946692608, 6566769862901760 ]
[ "nonn" ]
A127366
[ 0, 2, 1, 4, 6, 3, 8, 5, 10, 12, 7, 14, 9, 16, 11, 18, 20, 13, 22, 15, 24, 17, 26, 19, 28, 30, 21, 32, 23, 34, 25, 36, 27, 38, 29, 40, 42, 31, 44, 33, 46, 35, 48, 37, 50, 39, 52, 41, 54, 56, 43, 58, 45, 60, 47...
[ "nice", "nonn" ]
A306284
[ 1, 2, 2, 2, 3, 4, 4, 3, 3, 6, 6, 4, 7, 8, 4, 4, 9, 6, 10, 6, 5, 12, 12, 5, 5, 14, 6, 8, 15, 8, 16, 6, 7, 18, 6, 6, 19, 20, 8, 7, 21, 10, 22, 12, 7, 24, 24, 7, 7, 10, 10, 14, 27, 12, 8, 9, 11, 30, 30, ...
[ "nonn", "look" ]
A323125
[ 0, 0, 2, 3, 12, 23, 61, 135, 306, 679, 1499, 3254, 7041, 15127, 32321, 68745, 145654, 307507, 647246, 1358592, 2844722, 5943310, 12392127, 25790949, 53587142, 111169216, 230298492, 476459514, 984532396, 2032073964, 4189741347, 8629836681, 17758744396 ]
[ "nonn" ]
A185515
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[ "nonn" ]
A267458
[ 1, 1, 1, 1, 3, 3, 5, 5, 7, 7, 9, 9, 11, 11, 13, 13, 15, 15, 17, 17, 19, 19, 21, 21, 23, 23, 25, 25, 27, 27, 29, 29, 31, 31, 33, 33, 35, 35, 37, 37, 39, 39, 41, 41, 43, 43, 45, 45, 47, 47, 49, 49, 51, 51, 53, ...
[ "nonn", "easy" ]
A249108
[ 133, 667, 961, 1007, 2013, 3986, 5662, 15979, 17453, 33233, 46943, 51101, 94870, 101444, 119045, 134298, 136957, 179567, 188897, 213511, 226203, 246149, 279749, 299139, 306667, 310157, 434531, 449087, 449183, 518459, 519203 ]
[ "nonn" ]
A288281
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[ "nonn" ]
A064589
[ 0, 20560831566912, 5.169643720563784e+26, 1.1956114445971661e+40, 2.7385100577690772e+53, 6.26568137231372e+66, 1.4334085007558e+80 ]
[ "nonn", "easy" ]
A170273
[ 1, 24, 552, 12696, 292008, 6716184, 154472232, 3552861336, 81715810728, 1879463646744, 43227663875112, 994236269127576, 22867434189934250, 525950986368487700, 12096872686475217000, 278228071788930000000 ]
[ "nonn" ]