id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A038742
[ 1, 13, 93, 486, 2080, 7756, 26193, 82263, 244906, 701075, 1950697, 5318976, 14300161, 38078927, 100753810, 265490007, 697759186, 1830912101, 4799663942, 12574986625, 32935310938, 86245253339, 225820609154 ]
[ "nonn" ]
A117144
[ 1, 1, 1, 1, 2, 2, 3, 3, 4, 5, 6, 6, 8, 9, 10, 12, 15, 16, 19, 21, 25, 28, 32, 34, 41, 46, 51, 55, 64, 70, 79, 86, 97, 106, 119, 129, 146, 159, 175, 190, 214, 232, 256, 277, 306, 334, 367, 394, 434, 472, 515, 556, ...
[ "nonn" ]
A042346
[ 26, 53, 291, 635, 926, 1561, 2487, 4048, 51063, 55111, 106174, 161285, 267459, 696203, 3748474, 8193151, 429792326, 867777803, 4768681341, 10405140485, 15173821826, 25578962311, 40752784137, 66331746448 ]
[ "nonn", "cofr", "frac", "easy" ]
A098536
[ 1, 1, 1, 1, 4, 13, 31, 61, 124, 295, 757, 1873, 4402, 10237, 24421, 59701, 146455, 356308, 862810, 2096632, 5127391, 12583513, 30886735, 75775729, 186054142, 457662265, 1127659903, 2781162079, 6862930768, 16945704721, 41876228125, 103573882633, 2563599...
[ "easy", "nonn" ]
A374772
[ 7, 5, 4, 6, 9, 7, 3, 9, 9, 3, 3, 7, 4, 0, 5, 8, 3, 0, 3, 9, 1, 6, 5, 2, 1, 0, 5, 9, 9, 0, 2, 2, 9, 3, 3, 1, 3, 4, 2, 4, 3, 2, 1, 9, 2, 1, 4, 5, 9, 4, 3, 4, 2, 8, 4, 7, 6, 5, 8, 3, 5, 9, 2, 0...
[ "nonn", "cons" ]
A135575
[ 0, 3, -5, 9, -16, 30, -63, 129, -257, 513, -1024, 2046, -4095, 8193, -16385, 32769, -65536, 131070, -262143, 524289, -1048577, 2097153, -4194304, 8388606, -16777215, 33554433, -67108865, 134217729, -268435456, 536870910, -1073741823, 2147483649, -42949...
[ "sign", "easy" ]
A220293
[ 11, 17, 29, 41, 47, 59, 67, 71, 97, 101, 107, 127, 149, 151, 167, 179, 223, 229, 233, 239, 241, 263, 269, 281, 307, 311, 347, 349, 367, 373, 401, 409, 419, 431, 433, 443, 461, 487, 503, 569, 571, 587, 593, 599, 601, 607, 641...
[ "nonn" ]
A064851
[ 2, 2, 6, 4, 2, 6, 6, 8, 2, 2, 4, 12, 16, 6, 12, 12, 22, 2, 18, 2, 24, 4, 20, 20, 18, 12, 10, 8, 22, 8, 26, 32, 4, 14, 8, 8, 40, 10, 40, 4, 34, 16, 38, 8, 8, 16, 40, 44, 2, 14, 10, 24, 50, 10, 12, 4, 18, ...
[ "nonn" ]
A179050
[ 8, 1, 2, 2, 9, 9, 2, 4, 0, 5, 8, 2, 2, 6, 5, 8, 1, 5, 3, 8, 9, 6, 7, 8, 5, 3, 0, 5, 3, 7, 8, 3, 6, 1, 6, 2, 3, 8, 7, 2, 5, 8, 6, 7, 8, 8, 0, 3, 6, 8, 7, 7, 5, 0, 7, 6, 9, 5, 1, 1, 7, 9, 7, 8...
[ "nonn", "cons", "easy" ]
A253241
[ 0, 2, 4, 6, 8, 10, 13, 39, 65, 91, 117, 143, 13, 26, 39, 52, 65, 78, 91, 104, 117, 130, 143, 169, 26, 39, 52, 65, 78, 91, 104, 117, 130, 143, 169, 169, 39, 52, 65, 78, 91, 104, 117, 130, 143, 169, 169, 507, 52, 65, 7...
[ "nonn", "base", "easy" ]
A035287
[ 0, 4, 36, 144, 400, 900, 1764, 3136, 5184, 8100, 12100, 17424, 24336, 33124, 44100, 57600, 73984, 93636, 116964, 144400, 176400, 213444, 256036, 304704, 360000, 422500, 492804, 571536, 659344, 756900, 864900, 984064, 1115136, 1258884 ]
[ "nonn", "easy" ]
A057719
[ 3, 19, 163, 571, 1459, 8803, 9137, 17497, 41113, 52489, 78787, 87211, 135433, 139483, 144667, 164617, 174763, 196579, 274081, 370009, 370387, 478243, 760267, 941489, 944803, 1041619, 1220347, 1236787, 1319323, 1465129, 1663579, 1994659 ]
[ "nonn" ]
A098820
[ 1, 1, 2, 4, 4, 8, 8, 8, 8, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1...
[ "nonn" ]
A072065
[ 0, 2, 9, 11, 12, 14, 21, 23, 24, 26, 33, 35, 36, 38, 45, 47, 48, 50, 57, 59, 60, 62, 69, 71, 72, 74, 81, 83, 84, 86, 93, 95, 96, 98, 105, 107, 108, 110, 117, 119, 120, 122, 129, 131, 132, 134, 141, 143, 144, 146, 153...
[ "nonn", "nice", "easy" ]
A077903
[ 1, 0, 2, -3, 6, -12, 25, -48, 98, -195, 390, -780, 1561, -3120, 6242, -12483, 24966, -49932, 99865, -199728, 399458, -798915, 1597830, -3195660, 6391321, -12782640, 25565282, -51130563, 102261126, -204522252, 409044505, -818089008, 1636178018, -32723...
[ "sign" ]
A211212
[ 1, 1, 69, 33661, 60376809, 288294050521, 3019098162602349, 60921822444067350000, 2.1590580133336677e+24, 1.2533957404631194e+29, 1.12890821672591e+34, 1.510335441937894e+39 ]
[ "nonn", "changed" ]
A381488
[ 1, 5, 22, 35, 51, 92, 117, 145, 247, 287, 376, 425, 477, 590, 651, 715, 782, 925, 1001, 1162, 1247, 1335, 1426, 1617, 1717, 2035, 2147, 2501, 2625, 2882, 3015, 3151, 3577, 3725, 4187, 4347, 4845, 5017, 5551, 5735, 6112, 6305, 6501, ...
[ "nonn" ]
A330067
[ 2, 5, 7, 10, 12, 15, 17, 20, 22, 25, 27, 30, 32, 35, 37, 40, 42, 45, 47, 50, 53, 55, 58, 60, 63, 65, 68, 70, 73, 75, 78, 80, 83, 85, 88, 90, 93, 95, 98, 100, 103, 106, 108, 111, 113, 116, 118, 121, 123, 126, 128, 1...
[ "nonn", "easy" ]
A002697
[ 0, 1, 8, 48, 256, 1280, 6144, 28672, 131072, 589824, 2621440, 11534336, 50331648, 218103808, 939524096, 4026531840, 17179869184, 73014444032, 309237645312, 1305670057984, 5497558138880, 23089744183296 ]
[ "nonn", "easy" ]
A243370
[ 1, 8, 2, 5, 2, 0, 7, 6, 3, 4, 7, 6, 9, 3, 3, 5, 0, 6, 8, 0, 5, 1, 8, 3, 4, 1, 5, 5, 7, 8, 3, 3, 4, 2, 4, 8, 6, 2, 2, 8, 9, 5, 8, 9, 7, 7, 4, 9, 7, 8, 6, 2, 8, 5, 6, 9, 6, 5, 4, 5, 0, 0, 8, 0...
[ "cons", "nonn" ]
A311734
[ 1, 4, 8, 13, 16, 22, 26, 30, 34, 41, 43, 52, 54, 60, 61, 68, 70, 76, 77, 87, 86, 97, 99, 99, 110, 108, 117, 118, 128, 128, 134, 142, 142, 148, 150, 151, 167, 163, 171, 174, 175, 189, 183, 192, 193, 203, 208, 213, 218, ...
[ "nonn" ]
A367485
[ 1, 0, 2, 9, 72, 735, 9300, 140511, 2469600, 49509711, 1115030220, 27871094823, 765622756800, 22925878253031, 743201185847484, 25930679953675816, 968847417413563100, 38593990513290610000, 1.6327761102788396e+21, 7.311182392707478e+22 ]
[ "nonn" ]
A282763
[ 9, 20, 176, 184, 277, 2669, 15705, 233202, 241202, 445657, 742714, 2095479, 4697536, 10508788, 20308656, 55683878, 86603874 ]
[ "nonn", "base" ]
A245053
[ 1, 2, 39, 1103, 36650, 1333156, 51392991, 2062946770, 85311756697, 3609589528430, 155513170273468, 6799151325525095, 300899538364069800, 13453346159391590000, 606776046327452400000, 2.7573839101542183e+22, 1.2612982942899476e+24, 5.802923864219685e+25 ]
[ "nonn" ]
A123485
[ 0, 0, 0, 2520, 1814400, 1888563600, 2979953776800, 6935468956416000, 23019567930463105000, 1.0568974066188381e+23, 6.537954148510904e+26, 5.326203537908914e+30 ]
[ "nonn" ]
A148354
[ 1, 1, 2, 5, 15, 45, 141, 463, 1563, 5364, 18737, 66410, 238088, 861872, 3145644, 11564752, 42791022, 159184950, 595039609, 2234155149, 8420557767, 31846117947, 120823458983, 459696946312, 1753484378777, 6704441257002, 25689464721910, 98628288008785, 3793531333...
[ "nonn", "walk" ]
A230898
[ 0, 186, 3706, 190364, 8554562, 400106488, 18831479468, 887265863604, 41898727967522, 1978685791204552, 93492250825825250, 4417805614428300000, 208779099851162980000, 9.866957125308861e+21, 4.663277905010464e+23 ]
[ "nonn" ]
A133245
[ 0, 1, 2, 3, 4, 5, 6, 7, 8, 13, 16, 20, 21, 23, 26, 29, 37, 55, 71, 79, 85, 103, 115, 191, 221, 277, 317, 335, 455, 499, 601, 639, 695, 719, 751, 815, 883, 1331, 1877, 3709, 3749, 3967, 4123, 4417, 4467, 4519, 4933, 6361, ...
[ "nonn" ]
A134403
[ 0, 1, 1, 2, 2, 3, 3, 3, 4, 5, 4, 4, 5, 6, 7, 5, 5, 6, 7, 8, 9, 6, 6, 7, 8, 9, 10, 11, 7, 7, 8, 9, 10, 11, 12, 13, 8, 8, 9, 10, 11, 12, 13, 14, 15, 9, 9, 10, 11, 12, 13, 14, 15, 16, 17, 10, 10, 11, 12,...
[ "nonn", "tabl" ]
A303152
[ 1, -3, -36, -207, -2214, -2754, -138591, 547722, -3730293, 30138075, 133709535, 7735237479, -35284817430, 702841889322, 3056530613769, 9493893988155, 112554319443867, 3822223052352735, -3940051663965051, 250298859930263170, -551418001934739800, 1061747224529191200 ]
[ "sign" ]
A150020
[ 1, 2, 5, 18, 67, 242, 977, 4046, 16328, 69645, 300988, 1277990, 5613890, 24861140, 108667372, 486175793, 2187282271, 9740962302, 44128325356, 200720461844, 905597752795, 4139718039504, 18981995857907, 86462331795136, 397944480795058, 1835973674030347, 842384026204...
[ "nonn", "walk" ]
A020222
[ 15, 57, 91, 93, 95, 121, 133, 155, 217, 247, 285, 341, 403, 435, 465, 561, 589, 645, 969, 1065, 1105, 1247, 1541, 1603, 1653, 1729, 1767, 2059, 2451, 2465, 2821, 2945, 2977, 3053, 3565, 3751, 4047, 4123, 4351, 4495, 4961, 5461, 5685...
[ "nonn" ]
A260020
[ 2, 3, 8, 9, 15, 26, 39, 45, 74, 104, 111, 117, 122, 128, 146, 175, 183, 195, 219, 296, 314, 333, 357, 386, 471, 488, 549, 554, 555, 579, 584, 585, 608, 626, 646, 657, 794, 831, 842, 914, 915, 939, 962, 1071, 1082, 1095, 1191...
[ "nonn" ]
A158620
[ 7, 182, 11466, 1421784, 305683560, 104543777520, 53421870312720, 38891121587660160, 38852230466072500000, 5.167346651987642e+22, 8.924007667982658e+25, 1.959712083888992e+29 ]
[ "easy", "nonn" ]
A179451
[ 2, 9, 3, 0, 5, 9, 8, 2, 8, 4, 4, 9, 1, 1, 9, 8, 9, 5, 4, 0, 7, 4, 5, 3, 7, 5, 4, 3, 6, 1, 9, 2, 6, 7, 7, 0, 2, 7, 6, 0, 2, 5, 1, 6, 3, 0, 9, 1, 7, 4, 2, 8, 3, 0, 9, 0, 7, 6, 4, 1, 7, 1, 3, 8...
[ "nonn", "cons", "easy" ]
A196482
[ 8, 83, 457, 4344, 40221, 374645, 3307716, 28430880, 248312071, 2192473876, 19348789798, 170510755795, 1500864452926, 13204967160428, 116225998484492, 1023302267971920, 9009586965300230, 79318454402499040, 698273303070427500 ]
[ "nonn" ]
A160059
[ 1, 26, -574, -79924, 74476, 401556376, 9974990776, -2752323059824, -158841568845424, 23393349808258976, 2395194744525753300, -230141809245567600000, -3.891761477761387e+22, 2.440269154465554e+24, 6.958582381523297e+26, -2.4612396011186616e+28 ]
[ "sign", "frac" ]
A184980
[ 1, 1, 6, 94, 10786, 3459386, 1470293676, 733351105934, 1 ]
[ "nonn", "hard", "more", "tabf" ]
A185547
[ 3, 6, 8, 10, 12, 14, 16, 17, 19, 21, 22, 24, 25, 27, 28, 30, 31, 33, 34, 36, 37, 39, 40, 42, 43, 45, 46, 47, 49, 50, 52, 53, 54, 56, 57, 59, 60, 61, 63, 64, 65, 67, 68, 69, 71, 72, 73, 75, 76, 77, 79, 80, 81, 8...
[ "nonn" ]
A227125
[ 2, 3, 3, 4, 7, 4, 5, 13, 13, 5, 6, 23, 33, 23, 6, 7, 40, 81, 81, 40, 7, 8, 68, 202, 295, 202, 68, 8, 9, 112, 492, 1079, 1079, 492, 112, 9, 10, 178, 1143, 3836, 5820, 3836, 1143, 178, 10, 11, 273, 2524, 12954, 30620, ...
[ "nonn", "tabl" ]
A342141
[ 1, 2, 6, 24, 116, 642, 3938, 26194, 186042, 1395008, 10948768, 89346128, 754062288, 6553942722, 58457558394, 533530004810, 4970471875914, 47169234466788, 455170730152340, 4459456443328824, 44300299824885390, 445703524836260400, 4536891586511660000, 46682404846719080000,...
[ "nonn" ]
A293715
[ 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 16, 18, 19, 21, 23, 24, 27, 28, 31, 33, 43, 51, 53, 54, 57, 60, 61, 62, 65, 67, 68, 69, 71, 73, 76, 79, 81, 83, 84, 89, 91, 110, 111, 115, 116, 118, 121, 124, 126, 129, 131, 13...
[ "nonn" ]
A083633
[ 162248, 283693, 322347, 399579, 399580, 401865, 427363, 452071, 452072, 518222, 788763, 1006927, 1006928, 1039540, 1059121, 1109342, 1143800, 1269116, 1543244, 1571225, 1589715, 1764582, 1846087, 2008354, 2264927, 2309218, 2309219 ]
[ "base", "nonn" ]
A187620
[ 1, 0, 64, 665, 3431, 12194, 34462, 83187, 178957, 352484, 647516, 1124045, 1861939, 2964870, 4564666, 6825959, 9951257, 14186312, 19825912, 27219969, 36780031, 48986090, 64393814, 83642075, 107460901 ]
[ "nonn", "easy" ]
A176396
[ 6, 2, 4, 0, 3, 7, 0, 3, 4, 9, 2, 0, 3, 9, 3, 0, 1, 1, 5, 4, 8, 2, 9, 8, 3, 7, 1, 8, 0, 4, 3, 9, 9, 8, 3, 2, 8, 8, 5, 2, 6, 0, 2, 1, 5, 3, 5, 2, 9, 1, 7, 3, 2, 7, 4, 8, 5, 5, 6, 7, 7, 1, 9, 8...
[ "cons", "nonn" ]
A299098
[ 0, 1, 2, 6, 25, 113, 548, 2770, 14426, 76851, 416848, 2294224, 12780394, 71924647, 408310668, 2335443077, 13446130438, 77863375126, 453203435319, 2649957419351, 15558520126830, 91687179000949, 542139459641933, 3215484006733932, 19125017153077910 ]
[ "nonn" ]
A142827
[ 29, 151, 761, 883, 1249, 1493, 2347, 2591, 2713, 2957, 3079, 3323, 4177, 4421, 4787, 4909, 5153, 5519, 5641, 6007, 6373, 6983, 7349, 8081, 8447, 10399, 11131, 11497, 11863, 12107, 12473, 13327, 13693, 14303, 14669, 15401, 15767, 15889, 1698...
[ "nonn", "easy" ]
A310103
[ 1, 3, 6, 11, 16, 18, 24, 29, 30, 33, 36, 39, 42, 51, 56, 54, 64, 69, 66, 69, 72, 75, 78, 91, 96, 90, 104, 109, 102, 105, 108, 111, 114, 131, 136, 126, 144, 149, 138, 141, 144, 147, 150, 171, 176, 162, 184, 189, 174, 17...
[ "nonn" ]
A028496
[ 1, 2, 2, 4, 2, 6, 4, 6, 4, 12, 4, 12 ]
[ "dead" ]
A012443
[ 1, 0, -12, 120, -1008, -45120, -11491392, 1378925184, -443544192768, 53698137606144, -32840379055537150, 7093049054642412000, -6.636093887068156e+21, 2.065820944848386e+24 ]
[ "sign" ]
A041761
[ 1, 40, 1601, 64080, 2564801, 102656120, 4108809601, 164455040160, 6582310416001, 263456871680200, 10544857177624000, 422057743976640260, 16892854616243233000, 676136242393706000000, 2.7062342550364482e+22, 1.083169838256973e+24 ]
[ "nonn", "frac", "easy" ]
A092935
[ 1, 3, 2, 5, 14, 42, 6, 429, 1430, 4862, 16796, 58786, 2261, 742900, 2674440, 66861, 35357670, 129644790, 2274470, 1767263190, 25246617, 24466267020, 91482563640, 343059613650, 1289904147324, 4861946401452, 18367353072152, 69533550916004 ]
[ "nonn" ]
A006411
[ 3, 20, 75, 210, 490, 1008, 1890, 3300, 5445, 8580, 13013, 19110, 27300, 38080, 52020, 69768, 92055, 119700, 153615, 194810, 244398, 303600, 373750, 456300, 552825, 665028, 794745, 943950, 1114760, 1309440, 1530408, 1780240, 2061675, 2377620, 273115...
[ "nonn", "easy", "nice" ]
A014637
[ 1, 7, 55, 81, 189, 235, 403, 469, 697, 783, 1071, 1177, 1525, 1651, 2059, 2205, 2673, 2839, 3367, 3553, 4141, 4347, 4995, 5221, 5929, 6175, 6943, 7209, 8037, 8323, 9211, 9517, 10465, 10791, 11799, 12145, 13213, 13579, 14707, 15093, 1628...
[ "nonn", "easy" ]
A373731
[ 15, 26, 39, 49, 58, 115, 122, 123, 129, 143, 155, 158, 159, 169, 177, 178, 183, 185, 187, 203, 205, 226, 265, 289, 314, 319, 326, 327, 329, 335, 339, 355, 394, 398, 415, 437, 497, 538, 559, 586, 589, 629, 667, 718, 899, 1006, ...
[ "nonn", "base" ]
A340915
[ 1, 0, 0, 8, 0, 0, 28, 0, 8, 56, 0, 56, 70, 0, 168, 64, 28, 280, 84, 168, 280, 176, 420, 224, 345, 560, 392, 616, 420, 848, 924, 336, 1246, 1064, 868, 1464, 988, 1680, 1820, 1120, 1904, 2464, 1932, 1904, 2870, 2752, 2772, 2...
[ "nonn" ]
A102098
[ 1, 1, 2, 7, 8, 3, 139, 152, 27, 4, 5711, 6200, 999, 64, 5, 408354, 442552, 69687, 3904, 125, 6, 45605881, 49399320, 7724835, 416704, 11375, 216, 7, 7390305396, 8003532512, 1248465852, 66464960, 1725875, 27432, 343, 8, 1647470410551 ]
[ "nonn", "tabl" ]
A009841
[ 1, 1, 61, 1933, 158041, 16465241, 2606419349, 539107003685, 146079106941745, 49518212296709810, 20652025953651073000, 1.0367691465318375e+22, 6.173444725835145e+24, 4.3002273326378626e+27 ]
[ "nonn" ]
A264494
[ 52, 324, 9714, 142352, 2517024, 42169152, 714303376, 12077450784, 204161943712, 3452345816640, 58366975597504, 986868844185984, 16685367542010496, 282109578735300860, 4769776075129487000, 80645235669257980000 ]
[ "nonn" ]
A029379
[ 1, 0, 0, 0, 0, 1, 1, 1, 0, 1, 1, 1, 2, 1, 2, 2, 2, 2, 3, 3, 3, 4, 3, 4, 5, 5, 5, 6, 6, 6, 8, 7, 8, 9, 9, 10, 11, 11, 11, 13, 13, 14, 16, 15, 16, 18, 18, 19, 21, 21, 22, 24, 24, 25, 28, 28, 29, 31, 31,...
[ "nonn", "easy" ]
A327512
[ 1, 2, 1, 4, 1, 6, 1, 8, 1, 10, 1, 12, 1, 14, 15, 16, 1, 6, 1, 20, 1, 22, 1, 24, 1, 26, 1, 28, 1, 30, 1, 32, 33, 34, 35, 12, 1, 38, 1, 40, 1, 14, 1, 44, 15, 46, 1, 48, 1, 10, 51, 52, 1, 6, 55, 56, 1, 58,...
[ "nonn" ]
A368562
[ 1, 1, 4, 22, 144, 1064, 8623, 75267, 698898, 6843478, 70209485, 751028445, 8344927123, 96028777007, 1141700185040, 13996586957076, 176645358631455, 2291885063335367, 30533724487796064, 417268607544901600, 5843943369536347000, 83810410526002090000, 1.2299079068114498e+21 ]
[ "nonn" ]
A033307
[ 1, 2, 3, 4, 5, 6, 7, 8, 9, 1, 0, 1, 1, 1, 2, 1, 3, 1, 4, 1, 5, 1, 6, 1, 7, 1, 8, 1, 9, 2, 0, 2, 1, 2, 2, 2, 3, 2, 4, 2, 5, 2, 6, 2, 7, 2, 8, 2, 9, 3, 0, 3, 1, 3, 2, 3, 3, 3, 4, 3, 5, 3, 6, 3...
[ "nonn", "base", "cons", "easy", "changed" ]
A379079
[ 1, 3, 8, 9, 12, 13, 16, 17, 20, 21, 23, 25, 26, 33, 34, 35, 37, 41, 44, 46, 48, 49, 52, 54, 56, 59, 60, 62, 63, 69, 71, 72, 74, 76, 77, 79, 81, 82, 83, 84, 86, 88, 89, 90, 91, 92, 94, 96, 97, 98, 101, 102, 103, ...
[ "nonn", "base" ]
A051870
[ 0, 1, 18, 51, 100, 165, 246, 343, 456, 585, 730, 891, 1068, 1261, 1470, 1695, 1936, 2193, 2466, 2755, 3060, 3381, 3718, 4071, 4440, 4825, 5226, 5643, 6076, 6525, 6990, 7471, 7968, 8481, 9010, 9555, 10116, 10693, 11286, 11895, 12520 ]
[ "nonn", "easy" ]
A306357
[ 0, 1, 3, 6, 10, 20, 38, 70, 130, 240, 442, 814, 1498, 2756, 5070, 9326, 17154, 31552, 58034, 106742, 196330, 361108, 664182, 1221622, 2246914, 4132720, 7601258, 13980894, 25714874, 47297028, 86992798, 160004702, 294294530, 541292032, 995591266, 1...
[ "nonn" ]
A191013
[ 1, 5, 9, 29, 61, 119, 249, 507, 1017, 2045, 4047, 8181, 16381, 32765, 65521, 131069, 262137, 524277, 1048567, 2097145, 4194285, 8388597, 16777185, 33554421, 67108821, 134217725, 268435405, 536870909, 1073741811, 2147483619, 4294967275, 8589934569, 1717...
[ "nonn" ]
A080688
[ 1, 2, 3, 4, 5, 7, 6, 11, 13, 8, 10, 17, 9, 19, 14, 23, 29, 12, 15, 22, 31, 37, 26, 41, 21, 43, 16, 20, 25, 34, 47, 53, 18, 33, 38, 59, 61, 28, 35, 46, 67, 39, 71, 58, 73, 79, 24, 30, 44, 51, 55, 62, 83, 49, 8...
[ "easy", "nonn", "tabf" ]
A073619
[ 0, 8, 10, 21, 28, 45, 58, 77, 100, 129, 160, 201, 238, 285, 328, 381, 440, 501, 568, 639, 712, 791, 874, 963, 1060, 1161, 1264, 1371, 1480, 1593, 1720, 1851, 1988, 2127, 2276, 2427, 2584, 2747, 2914, 3087, 3266, 3447, 3638, 3831, ...
[ "nonn" ]
A183999
[ 2025, 2691, 3793, 6111, 10449, 19935, 39697, 85431, 190305, 450111, 1098433, 2812551, 7386129, 20098095, 55623217, 157619511, 451006785, 1309524831, 3821415073, 11250418791, 33202564209, 98511527055, 292616203537 ]
[ "nonn" ]
A340575
[ 2, 2, 3, 5, 5, 3, 2, 11, 7, 7, 5, 2, 3, 0, 3, 7, 11, 7, 31, 2, 2, 2, 5, 13, 3, 3, 2, 71, 2, 3, 31, 109, 71, 7, 3, 0, 2, 59, 2, 17, 3, 5, 61, 0, 29, 17, 41, 29, 5, 3, 5, 3, 11, 79, 0, 41, 3, 11, 5, 5...
[ "nonn" ]
A232041
[ 2, 7, 80, 3082, 377676, 136134243, 149582129861, 504400950236556, 5221663722138853000, 1.6518508721746618e+23, 1.597812085531087e+28, 4.729579027493623e+33 ]
[ "nonn" ]
A340226
[ 2, 4, 4, 6, 6, 4, 42, 18, 6, 6, 10, 10, 6, 2, 120, 18, 12, 6, 6, 30, 6, 24, 70, 6, 18, 60, 6, 66, 52, 30, 6, 42, 18, 366, 2, 6, 6, 2, 18, 18, 12, 40, 30, 6, 2, 78, 66, 36, 66, 6, 42, 54, 2, 2, 36, 90, 60,...
[ "nonn" ]
A318307
[ 1, 2, 2, 2, 2, 4, 2, 4, 2, 4, 2, 4, 2, 4, 4, 2, 2, 4, 2, 4, 4, 4, 2, 8, 2, 4, 4, 4, 2, 8, 2, 8, 4, 4, 4, 4, 2, 4, 4, 8, 2, 8, 2, 4, 4, 4, 2, 4, 2, 4, 4, 4, 2, 8, 4, 8, 4, 4, 2, 8, 2, 4, 4, 4...
[ "nonn", "mult" ]
A339390
[ 1, 7, 116, 2397, 54845, 1329644, 33464881, 864627351, 22776683200, 609024723535, 16478750543705, 450190397799036, 12397538372467108, 343712858468053300, 9584085091610235000, 268571959802603860000, 7.55877203747368e+21, 2.1354882161272376e+23 ]
[ "nonn" ]
A086405
[ 1, 4, 18, 84, 396, 1872, 8856, 41904, 198288, 938304, 4440096, 21010752, 99423936, 470479104, 2226331008, 10535111424, 49852682496, 235905426432, 1116316463616, 5282466223104, 24996898556928, 118286594002944 ]
[ "easy", "nonn" ]
A106246
[ 1, 2, 1, 1, 4, 1, 0, 3, 6, 1, 0, 0, 6, 8, 1, 0, 0, 0, 10, 10, 1, 0, 0, 0, 0, 15, 12, 1, 0, 0, 0, 0, 0, 21, 14, 1, 0, 0, 0, 0, 0, 0, 28, 16, 1, 0, 0, 0, 0, 0, 0, 0, 36, 18, 1, 0, 0, 0, 0, 0, 0, 0...
[ "easy", "nonn", "tabl" ]
A337425
[ 0, 23, 113, 563, 1013, 1823, 70313, 351563, 82013, 410063, 43945313, 1328603, 18452813, 1977539063, 0, 830376563, 538084013, 968551223, 13452100313, 1441625976563, 43584805013, 2145767211914063, 0, 0, 9806581127813, 6354664570823, 681012578320313, 44129615075156...
[ "nonn" ]
A013692
[ 1, 65435, 2, 1, 5, 1, 4, 1, 3, 3, 1, 7, 1, 2, 6, 2, 1, 7, 1, 1, 2, 1, 4, 4, 2, 3, 13, 1, 2, 1, 5, 1, 1, 8, 1, 5, 1, 1, 1, 4, 1, 2, 2, 2, 1, 44, 1, 2, 1, 2, 4, 2, 1, 6, 153, 41, 1, 26, 1, 4, 1, 3...
[ "nonn", "cofr" ]
A006744
[ 1, 2, 4, 7, 13, 24, 44, 77, 139, 250, 450, 788, 1403, 2498, 4447, 7782, 13769, 24363, 43106, 75396, 132865, 234171, 412731, 721433, 1267901, 2228666, 3917654, 6843596, 12004150, 21059478, 36947904, 64506130, 112983428, 197921386, 346735329, 60504...
[ "nonn", "walk" ]
A313545
[ 1, 5, 10, 14, 19, 23, 29, 34, 41, 44, 52, 49, 61, 57, 71, 72, 83, 82, 94, 83, 103, 91, 113, 110, 125, 120, 136, 117, 145, 125, 155, 148, 167, 158, 178, 151, 187, 159, 197, 186, 209, 196, 220, 185, 229, 193, 239, 224, 251...
[ "nonn" ]
A108441
[ 1, 1, 1, 3, 6, 1, 15, 39, 11, 1, 97, 284, 100, 16, 1, 721, 2249, 888, 186, 21, 1, 5827, 18890, 7977, 1952, 297, 26, 1, 49759, 165519, 72991, 19731, 3601, 433, 31, 1, 441729, 1496696, 680096, 196864, 40586, 5960, 594, 36, 1, 40...
[ "nonn", "tabl" ]
A055489
[ 5, 23, 95, 719, 5039, 39917, 361657, 3624941, 39904153, 479001599, 6226862869, 87178291199, 1307672080867, 20922780738961, 355687390376431, 6402373545694717, 121645099711277870, 2432902005056590000, 51090942157413850000 ]
[ "nonn" ]
A048191
[ 32, 144, 192, 312, 240, 592, 672, 760, 648, 936, 1600, 864, 1560, 1224, 1872, 2160, 2688, 1920, 2088, 1920, 3312, 3732, 3760, 2640, 3984, 4240, 4272, 2880, 4248, 6432, 5976, 5112, 7760, 5280, 7932, 4320, 8968, 9000, 6176, 7680, 10224, ...
[ "nonn" ]
A341479
[ 1, 8, 256, 80000, 268435456, 9503683872768, 3503536769037500400, 1.3371518717864845e+25, 5.270733301121108e+32, 2.14344906329058e+41 ]
[ "nonn" ]
A372147
[ 500, 544, 550, 552, 588, 622, 307172, 307402, 307888, 308920, 309480, 309522, 309604, 310348, 310422, 310658, 310754, 310964, 310974, 310980, 311206, 311214, 311342, 311466, 311582, 311788, 311790, 312050, 312070, 312100, 313022, 313050, 313336, 3135...
[ "nonn", "base" ]
A223458
[ 41, 43, 47, 61, 67, 83, 89, 97, 401, 409, 419, 421, 431, 433, 439, 443, 449, 457, 461, 463, 467, 479, 487, 491, 499, 601, 607, 613, 617, 619, 631, 641, 643, 647, 653, 659, 661, 673, 677, 683, 691, 809, 811, 821, 823, 827, 82...
[ "nonn", "base" ]
A351395
[ 1, 3, 4, 7, 6, 12, 8, 15, 13, 18, 12, 16, 14, 24, 24, 31, 18, 21, 20, 22, 32, 36, 24, 24, 31, 42, 40, 28, 30, 72, 32, 63, 48, 54, 48, 25, 38, 60, 56, 30, 42, 96, 44, 40, 33, 72, 48, 40, 57, 43, 72, 46, 54, 48, ...
[ "nonn" ]
A316998
[ 1, 8, 162, 7665, 854383, 223714229, 140997597309, 211618250694112, 754017146499756200 ]
[ "nonn" ]
A017169
[ 0, 387420489, 198359290368, 7625597484987, 101559956668416, 756680642578125, 3904305912313344, 15633814156853824, 51998697814228990, 150094635296999140, 387420489000000000, 913517247483641000 ]
[ "nonn", "easy" ]
A253495
[ 81, 414, 414, 1388, 1377, 1388, 3639, 3090, 2640, 3639, 8501, 5386, 4196, 4720, 8501, 19701, 9679, 6476, 6931, 9654, 19701, 48293, 20975, 11937, 10477, 13528, 22236, 48293, 126357, 51167, 25715, 18526, 19475, 29370, 55362, 126357, 346997, 133...
[ "nonn", "tabl" ]
A101539
[ 0, 32, 71, 176, 191, 324, 416, 731, 1361, 13946, 14886, 32705, 63953, 64782, 82376 ]
[ "nonn", "hard", "more" ]
A215088
[ 0, 1, 2, 3, 4, 2, 3, 4, 5, 6, 4, 5, 6, 7, 8, 6, 7, 8, 9, 10, 8, 9, 10, 11, 12, 4, 5, 6, 7, 8, 6, 7, 8, 9, 10, 8, 9, 10, 11, 12, 10, 11, 12, 13, 14, 12, 13, 14, 15, 16, 8, 9, 10, 11, 12, 10, 11, 12, 13...
[ "nonn", "easy" ]
A279919
[ 1, 4, 5, 9, 50, 59, 109, 168, 613, 7524, 30709, 38233, 10391852, 10430085, 20821937, 52073959, 385339650, 437413609, 15694815965, 94606309399, 110301125364, 1087316437675, 4459566876064, 10006450189803, 14466017065867, 24472467255670, 63410951577207, 87883418832...
[ "nonn", "easy", "frac" ]
A325547
[ 1, 1, 2, 3, 6, 8, 11, 18, 24, 30, 45, 57, 71, 96, 120, 148, 192, 235, 286, 354, 431, 518, 628, 752, 893, 1063, 1262, 1482, 1744, 2046, 2386, 2775, 3231, 3733, 4305, 4977, 5715, 6536, 7507, 8559, 9735, 11112, 12608, 14252, 16177,...
[ "nonn" ]
A084714
[ 0, 7, 3, 5, 7, 14639, 11, 13, 24137567, 17, 19, 4.8025076399650196e+32, 23, 727, 839, 29, 31, 1223, 1367, 37, 2825759, 41, 43, 2207, 47, 45767944570399, 7890479, 53, 1.1762462939034397e+21, 12117359, 59, 61, 318644812890623 ]
[ "nonn" ]
A198283
[ 16, 700, 31718, 1478756, 70004726, 3337609528, 158791292898, 7572454386112, 361223237102398, 17233549055351780, 822235886561754800, 39230600563964576000, 1.8717827160352288e+21, 8.930744675504627e+22 ]
[ "nonn" ]
A021187
[ 0, 0, 5, 4, 6, 4, 4, 8, 0, 8, 7, 4, 3, 1, 6, 9, 3, 9, 8, 9, 0, 7, 1, 0, 3, 8, 2, 5, 1, 3, 6, 6, 1, 2, 0, 2, 1, 8, 5, 7, 9, 2, 3, 4, 9, 7, 2, 6, 7, 7, 5, 9, 5, 6, 2, 8, 4, 1, 5, 3, 0, 0, 5, 4...
[ "nonn", "cons" ]
A134226
[ 1, 2, 2, 1, 5, 3, 1, 2, 8, 4, 1, 2, 3, 11, 5, 1, 2, 3, 4, 14, 6, 1, 2, 3, 4, 5, 17, 7, 1, 2, 3, 4, 5, 6, 20, 8, 1, 2, 3, 4, 5, 6, 7, 23, 9, 1, 2, 3, 4, 5, 6, 7, 8, 26, 10, 1, 2, 3, 4, 5, 6, 7, ...
[ "nonn", "tabl" ]
A202529
[ 1940, 4901, 10240, 21297, 46621, 100550, 214388, 460948, 992061, 2128796, 4570909, 9821889, 21095902, 45306296, 97317908, 209034085, 448973976, 964350281, 2071342213, 4449024294, 9556039324, 20525432468, 44086562621, 94693444852 ]
[ "nonn" ]