id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A198618
[ 3, 1, 1, 8, 2, 9, 7, 4, 9, 6, 8, 4, 4, 7, 6, 4, 3, 6, 7, 5, 8, 9, 8, 9, 9, 3, 4, 7, 9, 0, 2, 4, 5, 1, 1, 6, 8, 2, 6, 3, 7, 0, 1, 2, 7, 1, 2, 8, 3, 1, 6, 6, 0, 8, 5, 5, 2, 2, 5, 7, 6, 5, 9, 7...
[ "nonn", "cons" ]
A022818
[ 1, 1, 1, 1, 2, 1, 1, 3, 3, 1, 1, 4, 6, 5, 1, 1, 5, 10, 13, 7, 1, 1, 6, 15, 26, 23, 11, 1, 1, 7, 21, 45, 55, 44, 15, 1, 1, 8, 28, 71, 110, 121, 74, 22, 1, 1, 9, 36, 105, 196, 271, 237, 129, 30, 1, 1, 10, ...
[ "nonn", "tabl" ]
A259049
[ 1, 4, 400, 960400, 54218191104, 71410553858811020, 2.1863153925605596e+24, 1.5528325458473433e+33, 2.5554649541466335e+43, 9.736551559782514e+54 ]
[ "nonn", "easy" ]
A120763
[ 2, 3, 8, 23, 528, 12143, 147452448, 1790515076063, 21742224568633010, 264015832936910620000, 3.2059442593529057e+24, 3.892978114132233e+28, 4.727243323990771e+32, 5.740291568321993e+36 ]
[ "nonn" ]
A199070
[ 8, 6, 1, 0, 7, 7, 6, 7, 4, 7, 3, 9, 5, 5, 2, 9, 9, 0, 2, 4, 1, 9, 8, 2, 3, 6, 5, 6, 7, 0, 3, 7, 7, 6, 3, 1, 0, 9, 4, 3, 0, 3, 9, 3, 3, 5, 8, 1, 2, 7, 3, 9, 0, 8, 9, 2, 8, 5, 6, 4, 3, 0, 9, 6...
[ "nonn", "cons" ]
A006102
[ 1, 121, 11011, 925771, 75913222, 6174066262, 500777836042, 40581331447162, 3287582741506063, 266307564861468830, 21571273555248780000, 1.747282899667791e+21, 1.4153017789926895e+23, 1.1463951511551878e+25, 9.285802641819402e+26, 7.521500657588593e+28 ]
[ "nonn" ]
A053690
[ 10, 14, 25, 34, 41, 54, 66, 77, 81, 97, 100, 103, 124, 134, 144, 170, 172, 207, 219, 224, 228, 231, 239, 240, 244, 255, 262, 265, 272, 275, 277, 278, 280, 293, 294, 324, 335, 336, 373, 374, 377, 380, 398, 421, 438, 439, 457,...
[ "easy", "nonn", "base" ]
A385147
[ 2, 4, 8, 12, 28, 32, 96, 112, 176, 192, 1216, 1232, 5328, 5392, 5648, 5904, 71440, 71504, 333648, 333904, 338000, 339024, 4533328, 4533584, 5582160, 5586256, 5848400, 5852496, 274287952, 274288208, 1348030032, 1348095568, 1349144144, 1349209680, 13...
[ "nonn", "easy" ]
A089924
[ 0, 0, 1, 3, 8, 19, 41, 85, 167, 319, 588, 1066, 1880, 3272, 5588, 9431, 15686, 25841, 42070, 67926, 108634, 172467, 271643, 425109, 660756, 1021170, 1568905, 2398059, 3646437, 5519025, 8314623, 12473538, 18634748, 27731820, 41113453, 60735830, ...
[ "nonn" ]
A286201
[ 1, 1, 110, 11, 11000, 1111, 1111000, 1101111, 100100000, 110111111, 11000000000, 1011111111, 1111100000000, 1111111111, 1101110000000, 1110111011111111, 111111000000000, 110100001111111100, 11000000000000000, 11000111111111110000, 11111011000000000000 ]
[ "nonn", "easy" ]
A311226
[ 1, 4, 8, 12, 16, 20, 26, 30, 34, 38, 42, 46, 50, 54, 60, 64, 68, 72, 76, 80, 82, 88, 94, 98, 102, 106, 110, 114, 114, 122, 128, 132, 136, 140, 144, 148, 146, 156, 162, 166, 170, 174, 178, 182, 178, 190, 196, 200, 204, ...
[ "nonn" ]
A238631
[ 1, 5, 64, 2280, 123464, 7566280, 478968264, 30569959880, 1955134763464, 125107148059080, 8006513870533064, 512411390124519900, 32794241006913220000, 2.0988300170670592e+21, 1.3432509857429164e+23, 8.596805948466687e+24, 5.501955749372604e+26 ]
[ "nonn", "easy" ]
A161775
[ 1, 3, 4, 7, 4, 6, 7, 5, 6 ]
[ "base", "nonn" ]
A063796
[ 1, 3, 10, 14, 21, 49, 66, 70, 147, 160, 224, 248, 282, 330, 403, 462, 490, 764, 803, 817, 1034, 1056, 1120, 1235, 1508, 1512, 1584, 1752, 1779, 1792, 1852, 1974, 1976, 2076, 2310, 2418, 2573, 2821, 3232, 3234, 3401, 3416, 3551, 35...
[ "nonn" ]
A156805
[ 1, 2, 4, 8, 17, 41, 112, 369, 1555, 8625, 65323, 680275 ]
[ "hard", "more", "nonn" ]
A061462
[ 1, 1, 2, 1, 1, 4, 1, 1, 4, 1, 1, 2, 1, 1, 2, 1, 1, 4, 1, 1, 4, 1, 1, 2, 1, 1, 2, 1, 1, 4, 1, 1, 4, 1, 1, 2, 1, 1, 2, 1, 1, 4, 1, 1, 4, 1, 1, 2, 1, 1, 2, 1, 1, 4, 1, 1, 4, 1, 1, 2, 1, 1, 2, 1...
[ "nonn", "easy" ]
A141034
[ 1, 2, 3, 6, 10, 23, 34, 67, 110, 205, 320, 660 ]
[ "hard", "more", "nice", "nonn" ]
A285171
[ 1, 96, 4256, 132480, 3430528, 80104448, 1758695424, 37158281984, 765948707328, 15534537453568, 311681600004096, 6208696187633664, 123091007914770430, 2432892993997766700, 47996192255919000000, 945900094339720200000, 1.8633845662960308e+22, 3.670871179981771e+23, 7.2340784967456e+...
[ "nonn" ]
A196409
[ 2, 0, 5, 0, 8, 0, 0, 4, 4, 5, 3, 9, 2, 9, 1, 6, 4, 4, 4, 5, 6, 0, 5, 1, 2, 9, 0, 8, 9, 3, 4, 7, 2, 3, 6, 2, 4, 7, 6, 2, 0, 8, 2, 0, 9, 1, 7, 7, 7, 1, 3, 6, 9, 6, 5, 8, 7, 3, 3, 5, 7, 9, 0, 1...
[ "nonn", "cons" ]
A104370
[ 3, 4, 8, 14, 62, 182, 1372, 2522, 7562, 38272, 415802, 1247402, 16313472, 114107904, 570257104, 1161216000, 21043021824, 57893308852, 1099944846002, 5530978026000, 39437046917604, 425165932107504, 10235889009520064, 29233062045242350, 146100174169950000, 19178467969...
[ "nonn" ]
A136095
[ 2, 58, 361138, 43922730588128390 ]
[ "nonn" ]
A274182
[ 15, 26, 39, 158, 326, 566, 789, 961, 1159, 1262, 1369, 1478, 1591, 1718, 1849, 2582, 3085, 3829, 4659, 5587, 7697, 8891, 10189, 13885, 14695, 16838, 17281, 18187, 19111, 20057, 22546, 24131, 25798, 26938, 27515, 28102, 35566, 36886, 38919, ...
[ "nonn" ]
A360644
[ 1, 12, 513, 16194, 547543, 18234354, 609298887, 20344385080, 679408772089, 22688284005780, 757662377924917, 25301659203704230, 844933359518672600, 28216027727373070000, 942256839186226300000, 3.1466085716246303e+22, 1.0507905170911317e+24 ]
[ "nonn" ]
A092194
[ 11, 29, 37, 43, 53, 61, 97, 109, 137, 173, 199, 227, 257, 269, 271, 313, 347, 353, 379, 397, 401, 409, 421, 433, 439, 509, 521, 577, 599, 601, 617, 641, 643, 647, 659, 677, 733, 761, 773, 809, 821, 827, 839, 863, 911, 919, 9...
[ "nonn" ]
A372022
[ 1, 3, -3, 36, -150, 1131, -6975, 50349, -353001, 2598993, -19218273, 145002066, -1103619348, 8494014009, -65879935581, 514828933092, -4048045183590, 32008577419905, -254337177982545, 2029871382481236, -16264438160161098, 130785869141097200 ]
[ "sign" ]
A071478
[ 1, 0, 2, 2, 3, 4, 1, 1, 6, 2, 2, 4, 4, 1, 1, 3, 3, 5, 4, 4, 6, 6, 3, 3, 1, 5, 8, 6, 6, 10, 4, 4, 3, 3, 6, 10, 10, 4, 4, 3, 6, 6, 1, 1, 8, 2, 2, 6, 6, 1, 4, 3, 2, 8, 8, 1, 12, 12, 3, 3, 8, 1, 1...
[ "nonn" ]
A162285
[ 1, -1, -1, 1, -1, 1, 1, -1, 1, -1, -1, 1, -1, 1, 1, -1, 1, -1, -1, 1, -1, 1, 1, -1, 1, -1, -1, 1, -1, 1, 1, -1, 1, -1, -1, 1, -1, 1, 1, -1, 1, -1, -1, 1, -1, 1, 1, -1, 1, -1, -1, 1, -1, 1, 1, -1, 1, -1,...
[ "sign", "easy" ]
A150701
[ 1, 2, 8, 26, 120, 445, 2139, 8438, 41253, 168678, 831824, 3482570, 17256533, 73476232, 365132217, 1574583781, 7839012305, 34143715987, 170188243145, 747282889439, 3727870812624, 16478620718144, 82252079315253, 365644664307314, 1825847608159806, 8156048976314315, 4...
[ "nonn", "walk" ]
A085222
[ 0, 1, 1, 10, 21, 10, 11, 210, 211, 11, 20, 211, 2110, 221, 20, 21, 320, 2111, 2210, 311, 21, 100, 321, 3220, 2211, 3110, 321, 100, 101, 2100, 3221, 3320, 3111, 3210, 2111, 101, 110, 2101, 21100, 3321, 4220, 3211, 21110, 2121, 11...
[ "nonn", "tabl", "base", "fini" ]
A244459
[ 1, 0, 0, 0, 0, 1, 2, 2, 2, 2, 4, 7, 12, 16, 21, 29, 43, 65, 99, 142, 206, 297, 436, 641, 945, 1383, 2029, 2976, 4378, 6432, 9464, 13913, 20495, 30205, 44547, 65670, 96846, 142857, 210941, 311636, 460613, 680848, 1006682, 1488915, ...
[ "nonn" ]
A136498
[ 2, 7, 9, 11, 14, 20, 25, 29, 31, 36, 38, 40, 42, 45, 49, 52, 55, 57, 61, 64, 67, 73, 78, 80, 82, 85, 90, 95, 100, 105, 107, 112, 115, 117, 121, 123, 128, 130, 135, 141, 143, 146, 150, 152, 157, 159, 164, 166, 168, 170,...
[ "nonn" ]
A324679
[ 0, 0, 0, 0, 0, 0, 0, 3442, 0, 0, 0, 27, 28, 29, 0, 0, 84, 2368556, 0, 0, 638385, 0, 0, 0, 0, 3642394, 0, 0, 0, 464, 43807680, 2117461, 2117462, 2117463, 2117464, 0, 0, 0, 562491, 562492, 179, 0, 0, 1, 1007, 0, 104, 79, 8...
[ "nonn" ]
A194371
[ 1, 5, 9, 13, 15, 16, 17, 19, 20, 21, 23, 24, 25, 27, 31, 35, 39, 57, 61, 65, 69, 71, 72, 73, 75, 76, 77, 79, 80, 81, 83, 87, 91, 95, 113, 117, 121, 125, 127, 128, 129, 131, 132, 133, 135, 136, 137, 139, 143, 147, 151...
[ "nonn" ]
A235954
[ 81, 294, 294, 905, 722, 905, 2584, 1372, 1372, 2584, 7353, 2660, 1494, 2660, 7353, 20800, 5034, 1780, 1780, 5034, 20800, 58896, 9752, 2478, 2356, 2478, 9752, 58896, 167240, 18468, 3504, 3496, 3496, 3504, 18468, 167240, 474948, 35794, 4884, ...
[ "nonn", "tabl" ]
A385284
[ 1, 1, 4, 1, -152, -3515, -54080, -671363, -2823296, 199955305, 10101514240, 323321153881, 7583054076928, 80180394219757, -4570380001660928, -409907196093564400, -20705306119297925000, -748794938843475300000, -1.4289862480447261e+22, 6.10587389113316e+23 ]
[ "sign" ]
A290291
[ 1, 1, 101, 11, 11011, 100111, 1010111, 1001111, 101101111, 100011111, 10111011111, 10100111111, 1010010111111, 1010001111111, 101001101111111, 101100011111111, 10100111011111112, 10000000111111112, 1011101010111111200, 1010000001111111200 ]
[ "nonn", "easy" ]
A225094
[ 1, 1, 1, 1, 1, 1, 1, 2, 0, 1, 1, 6, 2, 0, 1, 1, 24, 54, 2, 0, 1, 1, 120, 1944, 384, 2, 0, 1, 1, 720, 99000, 132000, 2550, 2, 0, 1, 1, 5040, 6966000, 79716000, 8059800, 16506, 2, 0, 1, 1, 40320, 655678800, 78928416000, ...
[ "nonn", "tabl", "walk" ]
A259933
[ 220, 284, 1184, 1210, 2620, 2924, 5020, 5564, 6232, 6368, 10744, 10856, 12285, 14595, 17296, 18416, 66928, 66992, 67095, 71145, 63020, 76084, 69615, 87633, 79750, 88730, 100485, 124155, 122368, 123152, 122265, 139815, 141664, 153176, 142310, 1687...
[ "nonn" ]
A359679
[ 1, 2, 3, 4, 6, 10, 8, 12, 19, 18, 16, 24, 27, 36, 43, 32, 48, 59, 61, 67, 71, 64, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227, ...
[ "nonn" ]
A376516
[ 1, 0, 0, 6, 24, 120, 1800, 20160, 221760, 3507840, 59875200, 1037836800, 20776694400, 459761702400, 10686605529600, 268901439206400, 7318617546240000, 210804082384896000, 6440850193262285000, 209115023566972700000, 7.157303732396353e+21, 2.5753532865593987e+23 ]
[ "nonn", "easy" ]
A171986
[ 1, 1, 12, 11, 22, 11, 24, 13, 22, 31, 42, 11, 24, 13, 22, 31, 42, 11, 24, 13, 22, 31, 46, 15, 24, 33, 42, 51, 62, 11, 26, 15, 24, 33, 42, 51, 64, 13, 22, 31, 42, 11, 24, 13, 22, 31, 46, 15, 24, 33, 42, 51, 66, ...
[ "nonn", "base" ]
A195619
[ 16, 1040, 68640, 4529184, 298857520, 19720067120, 1301225572416, 85861167712320, 5665535843440720, 373839504499375170, 24667741761115320000, 1.6276971167291117e+21, 1.0740334196236027e+23, 7.086992872399048e+24 ]
[ "nonn", "easy", "frac" ]
A343826
[ 25, 45, 65, 81, 85, 105, 117, 145, 153, 165, 169, 185, 189, 205, 221, 245, 261, 265, 273, 285, 289, 297, 305, 333, 345, 357, 365, 369, 377, 385, 429, 445, 465, 477, 481, 485, 493, 505, 513, 533, 545, 549, 561, 565, 605, 609, ...
[ "nonn" ]
A133442
[ 3, 6, 8, 1, 3, 8, 1, 3, 6, 3, 6, 8, 1, 6, 8, 1, 3, 6, 3, 6, 8, 1, 6, 8, 1, 3, 8, 4, 5, 7, 2, 4, 7, 2, 4, 5, 4, 5, 7, 2, 5, 7, 2, 4, 5, 4, 5, 7, 2, 5, 7, 2, 4, 7 ]
[ "nonn", "uned" ]
A106976
[ 7, 13, 67, 109, 139, 181, 199, 223, 241, 277, 313, 439, 457, 463, 499, 523, 547, 613, 631, 643, 661, 673, 691, 811, 919, 937, 991, 1009, 1021, 1051, 1069, 1093, 1153, 1213, 1231, 1321, 1327, 1399, 1483, 1543, 1579, 1657, 1669, 174...
[ "nonn", "easy" ]
A302194
[ 1, -2, 5, -17, 79, -471, 3391, -28451, 272447, -2933807, 35102403, -462021525, 6634207777, -103200019093, 1728836723813, -31030630439249, 594094812208133, -12085090282079300, 260296103744105630, -5917885334682696000, 141625618336446410000 ]
[ "sign" ]
A022547
[ 13, 113143, 626927443, 2335215973, 3447123283, 4086982633, 4422726013, 6318867403, 7093284043, 8541306853, 10998082213, 14005112893, 18869466373, 21528117883, 21843411823, 28156779793, 30303283243 ]
[ "nonn" ]
A100211
[ 1, 2, 3, 6, 5, 14, 9, 4, 7, 8, 13, 10, 11, 16, 17, 24, 19, 20, 15, 12, 29, 18, 21, 26, 25, 28, 37, 34, 23, 22, 39, 36, 33, 30, 27, 44, 35, 46, 31, 32, 41, 52, 51, 40, 47, 42, 55, 56, 43, 38, 69, 48, 57, 62, 5...
[ "nonn" ]
A079396
[ 576, 63504, 23328900, 280361536, 285809990544, 333781196644, 47691924412356, 113665876416400, 347571590865984, 16488262627956900, 2792400404276224, 33201691798862596, 94938206778275360, 293289874501264, 7221841938953462000, 2547393791118267400, 26927835455229990000 ]
[ "nonn" ]
A206711
[ 768, 4954521600, 20251509535014910000, 8.852681291636721e+31, 3.776127947893931e+45, 9.262418104774571e+61, 8.861569472840575e+77 ]
[ "nonn", "nice" ]
A248260
[ 5, 2, 5, 23, 923, 1039448, 1349594009502, 1.8419909442276494e+24, 5.5318883796217146e+48, 1.724238743275274e+98 ]
[ "nonn" ]
A132677
[ 1, 2, -3, 1, 2, -3, 1, 2, -3, 1, 2, -3, 1, 2, -3, 1, 2, -3, 1, 2, -3, 1, 2, -3, 1, 2, -3, 1, 2, -3, 1, 2, -3, 1, 2, -3, 1, 2, -3, 1, 2, -3, 1, 2, -3, 1, 2, -3, 1, 2, -3, 1, 2, -3, 1, 2, -3, 1, 2, -3...
[ "sign", "easy" ]
A339895
[ 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 1, 0, 0, 1, 1, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 2, 1, 0, 1, 0, 2, 1, 0, 1, 2, 0, 0, 1, 1, 0, 1, 0, 1, 2, 0, 0, 2, 2, 2, 1, 1, 0, 3, 1, 1, 1, 0, 0, 2, 0, 0, 2, 2...
[ "nonn" ]
A126010
[ 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0...
[ "nonn", "tabl" ]
A221625
[ 1, 4, 112, 6120, 738150, 148700748, 49096652080, 24099422236160, 17023170538890750, 16517958827528755000, 2.1433818529290625e+22, 3.6180795747764067e+25, 7.785610317400771e+28 ]
[ "nonn" ]
A098363
[ 4, 14, 14, 2, 49, 2, 16, 7, 7, 16, 4, 56, 1, 56, 4, 16, 14, 8, 8, 14, 16, 2, 56, 2, 64, 2, 56, 2, 16, 7, 8, 16, 16, 8, 7, 16, 4, 56, 1, 64, 4, 64, 1, 56, 4, 16, 14, 8, 8, 16, 16, 8, 8, 14, 16, 8, 56, 2,...
[ "nonn", "tabl", "base" ]
A060165
[ 2, 2, 6, 16, 50, 150, 490, 1600, 5400, 18450, 64130, 225264, 800046, 2865226, 10341150, 37566720, 137270954, 504171432, 1860277042, 6892317200, 25631327190, 95640829922, 357975249026, 1343650040256, 5056424257500, 19073789328750, 72108867614796 ]
[ "easy", "nonn" ]
A081101
[ 1, 2, 8, 9, 10, 7, 6, 5, 18, 17, 4, 16, 28, 15, 27, 29, 35, 14, 26, 34, 36, 30, 25, 46, 32, 33, 111, 24, 77, 112, 78, 31, 79, 44, 45, 13, 43, 47, 110, 76, 109, 54, 75, 3, 53, 80, 23, 108, 22, 48, 52, 113, 74, 4...
[ "nonn" ]
A120035
[ 0, 0, 0, 1, 1, 5, 7, 20, 37, 81, 173, 344, 736, 1461, 3065, 6208, 12643, 25662, 52014, 105487, 212566, 430007, 865650, 1744136, 3508335, 7053390, 14167804, 28441899, 57065447, 114418462, 229341261, 459442819, 920097130, 1841946718, 3686197728 ]
[ "nonn" ]
A220871
[ 1, 1, 2, 4, 10, 26, 76, 232, 756, 2548, 8906, 31846, 116422, 432758, 1634944 ]
[ "nonn" ]
A127293
[ 1, 1, 1, 2, 3, 6, 8, 8, 9, 10, 8, 14, 18, 10 ]
[ "nonn" ]
A358105
[ 1, 1, 2, 1, 1, 2, 1, 3, 1, 1, 1, 2, 1, 4, 2, 1, 1, 3, 1, 1, 1, 2, 1, 1, 2, 3, 1, 5, 1, 2, 4, 1, 1, 1, 1, 2, 1, 6, 1, 2, 3, 1, 1, 1, 2, 1, 1, 1, 3, 2, 1, 4, 1, 2, 1, 1, 7, 1, 1, 2, 3, 1, 5, 2...
[ "nonn" ]
A062299
[ 0, 0, 1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4, 4, 5, 5, 5, 5, 6, 6, 6, 7, 7, 7, 8, 8, 8, 9, 9, 9, 10, 10, 10, 11, 11, 11, 12, 12, 12, 13, 13, 13, 13, 14, 14, 14, 15, 15, 15, 16, 16, 16, 17, 17, 17, 18, 18, 18, ...
[ "nonn" ]
A074232
[ 1, 2, 4, 5, 7, 8, 9, 10, 11, 13, 14, 16, 17, 18, 19, 20, 22, 23, 25, 26, 27, 28, 29, 31, 32, 34, 35, 36, 37, 38, 40, 41, 43, 44, 45, 46, 47, 49, 50, 52, 53, 54, 55, 56, 58, 59, 61, 62, 63, 64, 65, 67, 68, 70, ...
[ "nonn", "easy" ]
A060307
[ 1, 3, 1365, 8534295, 204893714025, 15735481638151276, 2.760485970394431e+21, 1.0064272707765552e+27, 6.593168418882602e+32, 7.40198799422691e+38, 1.3062985360672646e+45 ]
[ "easy", "nonn" ]
A176258
[ 9, 21, 33, 49, 57, 69, 77, 81, 93, 105, 121, 129, 133, 141, 161, 165, 177, 189, 201, 209, 213, 217, 237, 245, 249, 253, 285, 297, 301, 309, 321, 329, 341, 345, 361, 381, 385, 393, 413, 417, 437, 441, 453, 465, 469, 473, 489,...
[ "nonn" ]
A004820
[ 9, 2056, 4103, 6150, 8197, 10244, 12291, 14338, 16385, 18432, 177155, 179202, 181249, 183296, 185343, 187390, 189437, 191484, 193531, 354301, 356348, 358395, 360442, 362489, 364536, 366583, 368630, 531447, 533494, 535541, 537588, 539635, 541682, 5437...
[ "nonn", "easy" ]
A093718
[ 1, 1, 1, 0, 1, 2, 1, 1, 1, 0, 1, 2, 1, 1, 1, 0, 1, 2, 1, 1, 1, 0, 1, 2, 1, 1, 1, 0, 1, 2, 1, 1, 1, 0, 1, 2, 1, 1, 1, 0, 1, 2, 1, 1, 1, 0, 1, 2, 1, 1, 1, 0, 1, 2, 1, 1, 1, 0, 1, 2, 1, 1, 1, 0...
[ "nonn", "easy" ]
A267284
[ 6, 5, 24, 137, 1138, 12214, 104742, 741057, 5022782, 35540696, 271621650, 2252475421, 19535278570, 168510129798, 1410939522686, 11518135263919, 93278847927814, 762132469855714, 6339718207407286, 53641859402324040 ]
[ "nonn" ]
A366329
[ 1, 5, 324, 589764, 52393770000, 347773153451938500, 2.4463273561925907e+26, 2.454787139296675e+37, 4.55140097017244e+50, 1.9605648954145105e+66 ]
[ "nonn" ]
A205037
[ 256, 3184, 3184, 39419, 113020, 39419, 484930, 3913664, 3913664, 484930, 5968388, 134492814, 374394468, 134492814, 5968388, 73466056, 4627087816, 35397425472, 35397425472, 4627087816, 73466056, 904294268, 159230783550, 3354947677511 ]
[ "nonn", "tabl" ]
A382178
[ 2, 2, 3, 3, 3, 3, 4, 18, 18, 17, 17, 16, 4, 19, 19, 18, 18, 101, 4, 115, 114, 110, 110, 18, 5, 203, 199, 192, 189, 183, 28, 187, 27, 179, 177, 1341, 180, 176, 26, 170, 168, 165, 1320, 168, 1277, 1251, 162, 159, 5, 1649...
[ "nonn", "base" ]
A083028
[ 0, 2, 3, 5, 7, 8, 11, 12, 14, 15, 17, 19, 20, 23, 24, 26, 27, 29, 31, 32, 35, 36, 38, 39, 41, 43, 44, 47, 48, 50, 51, 53, 55, 56, 59, 60, 62, 63, 65, 67, 68, 71, 72, 74, 75, 77, 79, 80, 83, 84, 86, 87, 89, 91, ...
[ "nonn", "easy" ]
A020733
[ 2, 1, 2, 1, 2, 5, 4, 1, 4, 2, 4, 1, 2, 5, 8, 1, 2, 5, 8, 2, 6, 7, 8, 5, 8, 11, 2, 2, 4, 11, 10, 3, 8, 2, 6, 3, 6, 2, 4, 1, 2, 5, 8, 2, 12, 16, 16, 5, 6, 13, 8, 12, 12, 4, 8, 5, 4, 5, 6, 4, 2, 6,...
[ "nonn" ]
A005494
[ 1, 4, 17, 77, 372, 1915, 10481, 60814, 372939, 2409837, 16360786, 116393205, 865549453, 6713065156, 54190360453, 454442481041, 3952241526188, 35590085232519, 331362825860749, 3185554606447814, 31581598272055880, 322516283206446900, 3389017736055752000 ]
[ "nonn" ]
A123571
[ 13, 29, 79, 41, 41, 313, 421, 257, 541, 461, 1013, 673, 2341, 197, 661, 2113, 1361, 1009, 4447, 15161, 2857, 7789, 7499, 2113, 5101, 8269, 811, 9689, 1567, 1381, 2543, 31489, 3631, 23189, 9941, 10513, 16651, 21661, 84163, 5281, 13613, ...
[ "nonn" ]
A346636
[ 0, 1, 16, 77, 236, 565, 1156, 2121, 3592, 5721, 8680, 12661, 17876, 24557, 32956, 43345, 56016, 71281, 89472, 110941, 136060, 165221, 198836, 237337, 281176, 330825, 386776, 449541, 519652, 597661, 684140, 779681, 884896, 1000417, 1126896, 126500...
[ "nonn", "easy", "changed" ]
A147657
[ 1, 2, 1, -2, -2, 2, 3, -2, -4, 2, 5, -2, -6, 2, 7, -2, -8, 2, 9, -2, -10, 2, 11, -2, -12, 2, 13, -2, -14, 2, 15, -2, -16, 2, 17, -2, -18, 2, 19, -2, -20, 2, 21, -2, -22, 2, 23, -2, -24, 2, 25, -2, -26, 2, 27,...
[ "easy", "sign" ]
A096272
[ 1, 0, 4, 0, 6, 4, 0, 10, 12, 4, 0, 13, 30, 12, 4, 0, 18, 70, 36, 12, 4, 0, 19, 142, 94, 36, 12, 4, 0, 24, 274, 234, 100, 36, 12, 4, 0, 19, 501, 534, 258, 100, 36, 12, 4, 0, 18, 872, 1186, 630, 264, 100, 36, 12,...
[ "nonn", "tabl" ]
A072658
[ 0, 1, 2, 3, 4, 7, 5, 6, 11, 9, 28, 15, 17, 62, 8, 13, 10, 14, 45, 18, 24, 27, 100, 36, 187, 117, 91, 1292, 22, 70, 38, 72, 680, 93, 111, 295, 1229, 16, 47, 26, 29, 102, 12, 20, 23, 58, 302, 73, 189, 147, 2090, 21, ...
[ "nonn" ]
A036899
[ 2, 72, 2311920, 2562840000, 3844062000, 10617344640, 39923436672, 49213207440, 72555078960, 215073801360, 476873804160, 719511945840, 972291644352, 1567905917760, 2012086928880, 4707721763712, 7251605387280 ]
[ "nonn" ]
A139638
[ 312, 1, 3, 195, 45, 48, 4884, 732, 3525, 570, 1230, 2244, 930, 15555, 660, 6513, 4656, 228, 2847, 180, 2613, 21, 18, 1176, 2832, 63, 3168, 4500, 12, 4740, 225, 465, 4602, 5940, 25575, 38799, 6939, 4821, 2067, 81, 21090, 9570, 18480,...
[ "nonn" ]
A088783
[ 12, 23, 32, 34, 45, 56, 65, 67, 78, 89, 98, 100, 111, 122, 131, 133, 144, 155, 164, 166, 177 ]
[ "more", "nonn" ]
A276680
[ 1, 2, 6, 4, 4, 5, 10, 6, 8, 4, 8, 12, 4, 4, 24, 16, 4, 8, 8, 8, 12, 4, 16, 24, 6, 4, 20, 8, 4, 18, 12, 10, 12, 4, 16, 16, 8, 8, 36, 12, 4, 16, 8, 16, 16, 4, 12, 24, 9, 12, 32, 8, 4, 10, 32, 12, 12, 8, ...
[ "nonn" ]
A202455
[ 729, 1194, 1876, 2835, 4137, 5854, 8064, 10851, 14305, 18522, 23604, 29659, 36801, 45150, 54832, 65979, 78729, 93226, 109620, 128067, 148729, 171774, 197376, 225715, 256977, 291354, 329044, 370251, 415185, 464062, 517104, 574539, 636601, 703530 ]
[ "nonn" ]
A109369
[ 1, 7, 13, 19, 23, 29, 31, 43, 47, 59, 61, 71, 73, 89, 91, 107, 113, 119, 149, 151, 161, 179, 181, 191, 199, 203, 211, 223, 247, 287, 289, 301, 311, 317, 329, 331, 343, 347, 349, 353, 359, 377, 391, 403, 409, 413, 427, 457,...
[ "nonn", "base" ]
A065848
[ 1, 2, 5, 15, 45, 154, 674, 3575, 14946, 68308, 345653, 1931846, 9776107, 51415223, 311415054 ]
[ "base", "more", "nonn" ]
A163443
[ 17, 31, 103, 157, 179, 193, 233, 733, 827, 1097, 1129, 1327, 1543, 1597, 1723, 1831, 1889, 1907, 2069, 2137, 2393, 2677, 2803, 3163, 3257, 3433, 3617, 3797, 4261, 4999, 5233, 5237, 5309, 5449, 5701, 5939, 6079, 6173, 6637, 6781, 6961, ...
[ "nonn" ]
A390632
[ 2, 0, 4, 8, 2, 4, 1, 0, 0, 6, 4, 1, 7, 2, 2, 2, 9, 5, 3, 5, 7, 2, 7, 2, 7, 0, 2, 5, 6, 9, 6, 3, 9, 9, 4, 1, 4, 2, 5, 9, 1, 7, 0, 0, 3, 4, 6, 6, 4, 2, 3, 3, 4, 3, 7, 5, 0, 8, 2, 9, 5, 8, 0, 5...
[ "nonn", "cons", "easy", "new" ]
A321545
[ 1, -63, 730, -4159, 15626, -45990, 117650, -266303, 532171, -984438, 1771562, -3036070, 4826810, -7411950, 11406980, -17043519, 24137570, -33526773, 47045882, -64988534, 85884500, -111608406, 148035890, -194401190, 244156251, -304089030, 387952660, -489306350, ...
[ "sign", "mult" ]
A232129
[ 1979339339, 29399999, 37337999, 4391339, 59393339, 6733997, 73939133, 839, 9719, 103997939939, 113, 12791333, 13999133, 149399, 15797, 1637, 17333, 1811993, 1979339339, 0, 21139, 2273993, 23399339, 24179399, 2579939, 2699393, 27191939, 2837, 29399999, 3079, ...
[ "nonn", "base" ]
A189375
[ 1, 2, 3, 4, 8, 12, 16, 20, 30, 40, 50, 60, 80, 100, 120, 140, 175, 210, 245, 280, 336, 392, 448, 504, 588, 672, 756, 840, 960, 1080, 1200, 1320, 1485, 1650, 1815, 1980, 2200, 2420, 2640, 2860, 3146, 3432, 3718, 4004, 4368 ]
[ "easy", "nonn" ]
A138731
[ 0, 4531, 1, 1, 3, 1, 8, 3, 2, 1, 3, 1, 1, 9, 1, 2, 9, 1, 1, 5, 3, 2, 1, 1, 5, 1, 1, 3, 5, 3, 2, 1, 6, 1, 7, 2, 4, 1, 3, 1, 23, 2, 8, 2, 1, 19, 1, 23, 1, 3, 1, 18, 1, 2, 1, 1, 3, 24, 1, 4, 1, 1, ...
[ "nonn", "cofr" ]
A223283
[ 20, 15, 87, 351, 1575, 6831, 29943, 130815, 572103, 2501199, 10936215, 47815839, 209064807, 914089455, 3996657207, 17474508351, 76403468295, 334057454991, 1460593174743, 6386124254175, 27921931810983, 122082540957999 ]
[ "nonn" ]
A241482
[ 8, 12, 24, 60, 60, 364, 984, 1596, 1596, 1596, 3705, 58444, 84396, 164620, 172236, 369105, 369105, 731676, 731676, 3442296, 3442296, 32169916, 32169916, 47973864, 47973864, 47973864, 313114620, 313114620, 313114620, 313114620, 13461106065, 27765196680, ...
[ "nonn" ]
A101202
[ 142857, 285714, 428571, 571428, 714285, 857142, 999999, 1142856, 1285713, 1428570, 1571427, 1714284, 1857141, 1999998, 2142855, 2285712, 2428569, 2571426, 2714283, 2857140, 2999997, 3142854, 3285711, 3428568, 3571425, 3714282, 3857139, 3999996, 4142853, 4285...
[ "easy", "nonn" ]
A049554
[ 2, 7, 17, 31, 41, 47, 71, 73, 79, 97, 103, 113, 127, 137, 151, 167, 191, 193, 223, 233, 239, 241, 257, 263, 271, 281, 311, 313, 337, 359, 367, 383, 401, 409, 431, 433, 439, 449, 457, 479, 487, 503, 521, 569, 577, 593, 599, ...
[ "nonn", "easy" ]
A103865
[ 1, 2, 4, 3, 7, 5, 11, 6, 8, 9, 19, 10, 22, 12, 13, 14, 30, 15, 33, 16, 17, 18, 40, 20, 21, 23, 24, 25, 53, 26, 56, 27, 28, 29, 31, 32, 68, 34, 35, 36, 76, 37, 79, 38, 39, 41, 87, 42, 43, 44, 45, 46, 98, 47, 4...
[ "nonn" ]
A095193
[ 1, 11, 1, 7, 11, 47, 25, 17, 52, 23, 73, 97, 41, 61, 151, 131, 157, 139, 89, 239, 451, 281, 371, 509, 283, 661, 263, 841, 587, 839, 1339, 671, 1171, 499, 1283, 289, 1903, 743, 1621, 2609, 359, 2533, 1751, 2993, 1153, 6211, 8...
[ "nonn" ]
A349517
[ 1, 5, 65, 1145, 23185, 509005, 11782465, 283138545, 6996125985, 176633573205, 4536739406465, 118166489152745, 3113854691067185, 82864654201672600, 2223776891616904200, 60113561634017670000, 1.6353645037046527e+21, 4.4739382956328846e+22, 1.230059816693142e+24 ]
[ "nonn" ]