id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A085711
[ 4, 8, 9, 14, 20, 21, 24, 25, 26, 27, 30, 32, 33, 36, 38, 44, 46, 49, 57, 62, 68, 69, 70, 74, 84, 85, 93, 94, 100, 102, 105, 106, 112, 116, 120, 121, 124, 125, 126, 128, 129, 133, 134, 135, 144, 145, 150, 152, 160, 162,...
[ "easy", "nonn" ]
A155895
[ 1, 2, 17, 4, 6, 3, 29, 7, 10, 19, 31, 8, 18, 14, 37, 61, 81, 17, 33, 11, 63, 94, 9, 4, 13, 24, 16, 6, 27, 22, 52, 152, 28, 21, 143, 45, 35, 29, 67, 7, 62, 15, 247, 181, 193, 10, 105, 48, 12, 97, 19, 167, 36, 72...
[ "base", "nonn" ]
A151833
[ 1, 7, 91, 1484, 27468, 551313, 11710328, 259379101, 5933702467, 139272913892, 3338026689018, 81406063278113, 2014611366114053, 50486299825273270 ]
[ "nonn", "more" ]
A232793
[ 41, 336, 2942, 24520, 183010, 1202234, 6552283, 30323734, 119567288, 429359835, 1473949816, 4955858508, 16292947065, 52136731185, 161006763155, 475381815548, 1338181262613 ]
[ "nonn" ]
A250598
[ 46656000, 2592000000, 144000000000, 8000000000000, 175000000000000, 3828125000000000, 83740234375000000, 1034024414062500000, 12768133464843750000, 157660912023890620000, 1.318465653618456e+21 ]
[ "nonn" ]
A275575
[ 2, 3, 4, 5, 7, 13, 16, 23, 32, 43, 64, 281, 359, 487, 577, 1579, 1663, 1741, 3191, 9209, 11257, 12743, 13093, 17027, 26633, 104243, 134227, 152287, 700897, 1205459 ]
[ "nonn", "more" ]
A018691
[ 1, 3, 17, 51, 289, 867 ]
[ "nonn", "fini", "full", "easy" ]
A135835
[ 1, 2, 2, 3, 8, 3, 4, 22, 22, 4, 5, 52, 82, 52, 5, 6, 114, 254, 254, 114, 6, 7, 240, 677, 1000, 677, 240, 7, 8, 494, 1692, 3176, 3176, 1692, 494, 8, 9, 1004, 3972, 9136, 12182, 9136, 3972, 1004, 9, 10, 2026, 9052, 24202, ...
[ "nonn", "tabl" ]
A318803
[ 0, 1, 1, 2, 4, 9, 20, 48, 115, 286, 719, 1841, 4764, 12481, 32960, 87776, 235286, 634585, 1720432, 4686643, 12820514, 35205695, 97009447, 268152808, 743354184, 2066114828, 5756601016, 16075023964, 44982030666, 126114489722, 354219135234, 996572101250 ]
[ "nonn" ]
A245847
[ 1, 1, 2, 2, 5, 5, 15, 17, 78, 102, 568, 918, 6115, 11063, 84095, 167139, 1377562, 2919818, 25322454, 55877190, 500009859, 1130615111, 10314022021, 23685168139, 218801537756, 507728746032, 4731965243042, 11064419359152, 103808357373783 ]
[ "nonn" ]
A267623
[ 1, 10, 101, 1011, 10111, 101111, 1011111, 10111111, 101111111, 1011111111, 10111111111, 101111111111, 1011111111111, 10111111111111, 101111111111111, 1011111111111111, 10111111111111112, 101111111111111100, 1011111111111111200, 10111111111111110000 ]
[ "nonn", "easy" ]
A109033
[ 1, 1, 2, 6, 22, 88, 368, 1584, 6968, 31192, 141656, 651136, 3023840, 14166496, 66876096, 317809216, 1519163456, 7299577216, 35237444736, 170812433536, 831127053696, 4057858988416, 19873611712896, 97609555091456 ]
[ "nonn" ]
A062978
[ 5, 12, 53, 2, 14, 1, 1, 4, 2, 5, 11, 1, 2, 3, 5, 2, 4, 2, 1, 1, 2, 2, 4, 1, 3, 4, 1, 1, 2, 1, 1, 1, 3, 3, 162, 1, 1, 2, 3641, 1, 1, 1, 2, 2, 1, 1, 1, 1, 1, 2, 2, 2, 66, 1, 18, 1, 1, 10, 2, 4, 36, ...
[ "cofr", "easy", "nonn" ]
A077075
[ 2, 2, 3, 5, 7, 9, 12, 14, 17, 20, 23, 26, 30, 33, 36, 40, 44, 47, 51, 55, 59, 63, 67, 71, 75, 79, 84, 88, 92, 97, 101, 106, 111, 115, 120, 125, 129, 134, 139, 144, 149, 154, 159, 164, 169, 175, 180, 185, 190, 196, 20...
[ "nonn" ]
A161575
[ 1, 2, 25, 8, 81, 12, 15625, 24, 36, 80, 9765625, 60, 531441, 448, 1936, 264, 152587890625, 288, 3814697265625, 336, 10816, 11264, 2384185791015625, 480, 234256, 53248, 1764, 960, 4.5998653654474e+23, 1008, 931322574615478500000, 1920, 295936, 1114112...
[ "base", "nonn" ]
A051536
[ 1, 4, 28, 140, 1820, 7280, 138320, 1521520, 7607600, 7607600, 235835600, 4009205200, 148340592400, 148340592400, 6378645473200, 146708845883600, 1026961921185200, 1026961921185200, 1026961921185200, 29781895714370800, 1816695638576618800, 7266782554306475000 ]
[ "easy", "frac", "nice", "nonn" ]
A314981
[ 1, 5, 9, 14, 21, 23, 32, 33, 39, 42, 51, 51, 64, 61, 69, 70, 81, 79, 96, 89, 99, 98, 111, 107, 128, 117, 129, 126, 141, 135, 160, 145, 159, 154, 171, 163, 192, 173, 189, 182, 201, 191, 224, 201, 219, 210, 231, 219, 256, ...
[ "nonn" ]
A032775
[ 0, 1, 2, 3, 5, 6, 7, 8, 9, 10, 12, 13, 14, 15, 16, 17, 19, 20, 21, 22, 23, 24, 26, 27, 28, 29, 30, 31, 33, 34, 35, 36, 37, 38, 40, 41, 42, 43, 44, 45, 47, 48, 49, 50, 51, 52, 54, 55, 56, 57, 58, 59, 61, 62, 6...
[ "nonn", "easy" ]
A061204
[ 1, 7, 13, 34, 40, 76, 82, 138, 159, 195, 201, 327, 333, 369, 405, 531, 537, 663, 669, 795, 831, 867, 873, 1209, 1230, 1266, 1322, 1448, 1454, 1670, 1676, 1928, 1964, 2000, 2036, 2477, 2483, 2519, 2555, 2891, 2897, 3113, 3119, 3245...
[ "easy", "nonn" ]
A040190
[ 14, 3, 6, 1, 4, 1, 6, 3, 28, 3, 6, 1, 4, 1, 6, 3, 28, 3, 6, 1, 4, 1, 6, 3, 28, 3, 6, 1, 4, 1, 6, 3, 28, 3, 6, 1, 4, 1, 6, 3, 28, 3, 6, 1, 4, 1, 6, 3, 28, 3, 6, 1, 4, 1, 6, 3, 28, 3, 6, 1, 4, 1, ...
[ "nonn", "cofr", "easy" ]
A105595
[ 1, 1, 3, 1, 3, 3, 3, 1, 3, 3, 3, 3, 3, 7, 3, 9, 1, 3, 3, 5, 5, 7, 9, 3, 3, 7, 9, 15, 7, 13, 21, 13, 1, 1, 5, 1, 3, 5, 7, 11, 3, 3, 7, 13, 5, 11, 13, 19, 3, 7, 7, 7, 7, 19, 9, 25, 7, 13, 21, 23, 15...
[ "easy", "nonn" ]
A158843
[ 1, 2, 20, 952, 336112, 742166496, 10043945021760, 814531629739559800, 3.931500029835183e+23, 1.1235380975327354e+30, 1.8948231465474675e+37, 1.8813310850225673e+45 ]
[ "nonn" ]
A314145
[ 1, 5, 11, 16, 22, 27, 32, 38, 43, 49, 54, 59, 65, 70, 76, 81, 86, 92, 97, 103, 108, 113, 119, 124, 130, 135, 140, 146, 151, 157, 162, 167, 173, 178, 184, 189, 194, 200, 205, 211, 216, 221, 227, 232, 238, 243, 248, 254, 2...
[ "nonn" ]
A333470
[ 1, 3, 2, 4, 5, 6, 7, 9, 8, 11, 10, 13, 12, 15, 14, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 33, 32, 35, 34, 37, 36, 39, 38, 41, 40, 43, 42, 45, 44, 47, 46, 49, 48, 51, 50, 53, 52, 55, 5...
[ "base", "nonn" ]
A097088
[ 0, 1, 1, -1, 1, -5, 27, -9, 171, -69, -579, 10689, -60261, 116535, -304555, 268707, 7942071, -19570935, 9537731, 1117836325, -630737297, -52310180977, 618435378229, 523526983623, -3672122551119, 8661572895987, 1205887924659627, -8604836834766111, -778558931191...
[ "sign", "frac" ]
A113702
[ 10, 11, 22, 23, 12, 13, 91, 161, 189, 285, 429, 473, 869, 957, 1437, 2157, 3237, 4857, 7287, 4164, 3470, 4511, 2256, 1464, 1172, 782, 783, 392, 294, 413, 531, 342, 343, 172, 173, 519, 346, 347, 694, 1735, 1388, 926, 927, 464, 24...
[ "nonn" ]
A219252
[ 0, 0, 0, 0, 2, 2, 2, 3, 2, 2, 3, 2, 2, 3, 2, 5, 3, 2, 2, 3, 3, 2, 7, 2, 2, 3, 2, 5, 3, 2, 5, 3, 2, 2, 3, 3, 2, 0, 2, 2, 3, 3, 2, 7, 2, 5, 3, 2, 5, 3, 5, 2, 7, 2, 2, 3, 2, 2, 3, 2, 5, 3, 5, 5...
[ "nonn" ]
A144457
[ 1, -1, 1, -3, -8, 3, -15, -119, -217, 15, -105, -1574, -7440, -10954, 105, -945, -22679, -194646, -702874, -892281, 945, -10395, -363824, -4885615, -31288480, -94892945, -108046896, 10395, -135135, -6486479, -124999827, -1232430275, -6521470845, -174...
[ "sign", "uned" ]
A089696
[ 1, 2, 4, 6, 12, 16, 22, 28, 36, 52, 58, 66, 82, 112, 136, 166, 256, 352, 556, 562, 586, 616, 652, 658 ]
[ "base", "more", "nonn" ]
A388813
[ 8, 0, 4, 3, 6, 6, 6, 6, 3, 8, 4, 0, 0, 6, 9, 9, 8, 0, 3, 8, 0, 8, 9, 6, 5, 3, 5, 0, 3, 1, 0, 2, 5, 7, 5, 2, 3, 7, 1, 8, 4, 8, 2, 8, 6, 9, 8, 3, 9, 6, 0, 0, 7, 1, 8, 5, 0, 7, 8, 0, 6, 9, 7, 3...
[ "nonn", "cons" ]
A155423
[ 1, 7, 19, 52, 172, 643, 2936, 14954, 84090, 537490, 4238593, 38671134 ]
[ "nonn" ]
A204211
[ 1, 7, 49, 434, 4116, 41363, 431445, 4629851, 50775347, 566592411, 6412416619, 73428973184, 849204106870, 9904511238159, 116368090860251, 1375981128400665, 16362074062371684, 195540534817518300, 2347344805869799000 ]
[ "nonn" ]
A271256
[ 4, 0, 31, -27, 87, -79, 171, -167, 291, -287, 443, -439, 627, -623, 843, -839, 1091, -1087, 1371, -1367, 1683, -1679, 2027, -2023, 2403, -2399, 2811, -2807, 3251, -3247, 3723, -3719, 4227, -4223, 4763, -4759, 5331, -5327, 5931, -5927, 6...
[ "sign", "easy" ]
A155744
[ 3, 1, 1, 1, 3, 1, 1, 11, 11, 1, 1, 48, 143, 48, 1, 1, 274, 1835, 1835, 274, 1, 1, 1935, 23649, 51075, 23649, 1935, 1, 1, 15861, 310639, 1195999, 1195999, 310639, 15861, 1, 1, 146188, 4221286, 25753812, 45832899, 25753812, 4221286, ...
[ "nonn", "tabl" ]
A203659
[ 557544, 729677481, 949250483640, 931767180207600, 726872783930414300, 471365844803377400000, 2.621059445323156e+23, 1.277510645161077e+26, 5.548043664315627e+28 ]
[ "nonn" ]
A269868
[ 1, 3, 4, 2, 6, 8, 5, 7, 12, 14, 16, 17, 18, 20, 19, 9, 15, 10, 24, 25, 28, 26, 29, 11, 13, 32, 34, 33, 21, 37, 35, 22, 30, 23, 27, 49, 50, 48, 53, 31, 56, 58, 64, 65, 66, 68, 67, 69, 70, 72, 71, 73, 74, 77, 7...
[ "nonn" ]
A007672
[ 1, 1, 2, 6, 24, 1, 720, 3, 80, 12, 3628800, 2, 479001600, 360, 8, 45, 20922789888000, 40, 6402373705728000, 6, 240, 1814400, 1.1240007277776077e+21, 1, 145152, 239500800, 13440, 180, 3.0488834461171387e+29 ]
[ "nonn", "nice" ]
A039283
[ 5, 27, 28, 29, 35, 40, 45, 51, 55, 76, 80, 101, 105, 126, 130, 137, 138, 139, 142, 143, 144, 147, 148, 149, 150, 177, 178, 179, 185, 190, 195, 202, 203, 204, 210, 215, 220, 227, 228, 229, 235, 240, 245, 257, 258, 259, 261, ...
[ "nonn", "base", "easy" ]
A323000
[ 1, 1, 0, 1, 1, 1, 1, 0, 1, 0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1, 0, 0, 1, 1, 1, 1, 0, 0, 1, 1, 1, 0, 1, 1, 0, 0, 1, 0, 1, 0, 1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1, 0, 1...
[ "nonn", "base" ]
A202769
[ 86, 550, 2870, 13937, 65179, 283573, 1195615, 4936455, 19568405, 77564281, 297257410, 1142972573, 4284478150, 16140520899, 59540064936 ]
[ "nonn" ]
A154595
[ 1, 3, 3, -1, -3, -3, 1, 3, 3, -1, -3, -3, 1, 3, 3, -1, -3, -3, 1, 3, 3, -1, -3, -3, 1, 3, 3, -1, -3, -3, 1, 3, 3, -1, -3, -3, 1, 3, 3, -1, -3, -3, 1, 3, 3, -1, -3, -3, 1, 3, 3, -1, -3, -3, 1, 3, 3, -1, ...
[ "sign", "easy" ]
A304053
[ 1, 11, 6, 18, 32, 60, 124, 288, 598, 1266, 2910, 6362, 13924, 31578, 70292, 156670, 353098, 791762, 1776560, 3999190, 8991152, 20221266, 45520396, 102442546, 230580304, 519141320, 1168761696, 2631446768, 5925181452, 13341570650 ]
[ "nonn" ]
A287016
[ 0, 1, 2, 0, 3, 4, 1, 5, 2, 0, 7, 3, 8, 1, 4, 10, 5, 2, 0, 6, 13, 3, 14, 7, 1, 4, 17, 9, 2, 5, 0, 19, 10, 20, 6, 3, 22, 1, 12, 7, 4, 13, 25, 8, 2, 0, 5, 9, 28, 29, 16, 3, 6, 1, 32, 11, 18, 7, 4, 34, ...
[ "nonn", "easy" ]
A176721
[ 2, 30205, 133050536, 1713435083707, 12173043638400828, 151229306063970100000, 1.815272942608097e+24, 1.6183327444272812e+28, 3.3163433454457726e+32 ]
[ "base", "nonn" ]
A142089
[ 19, 89, 229, 439, 509, 719, 859, 929, 1069, 1279, 1489, 1559, 1699, 1979, 2399, 2539, 2609, 2749, 2819, 3169, 3449, 3659, 4079, 4219, 4289, 4639, 4919, 5059, 5479, 5689, 6389, 6529, 6599, 6949, 7019, 7159, 7229, 7369, 7649, 7789, 8069, ...
[ "nonn", "easy" ]
A283209
[ 299777, 299977, 29999777, 299999977, 2999999777, 299999999777, 2999977777777, 299999999999977, 2999999999977777700, 3000000000000000000, 299999999999977800000, 300000000000000000000, 3e+21 ]
[ "nonn", "base" ]
A234937
[ 1, 1, -1, 4, -5, 1, 18, -29, 12, -1, 120, -218, 119, -22, 1, 840, -1814, 1285, -345, 35, -1, 7920, -18144, 14674, -5205, 805, -51, 1, 75600, -196356, 185080, -79219, 16450, -1624, 70, -1, 887040, -2427312, 2515036, -1258628, 324569, -...
[ "tabl", "sign", "easy" ]
A155607
[ 1, 11, 89, 755, 6641, 59291, 532169, 4785155, 43053281, 387440171, 3486843449, 31381236755, 282430067921, 2541867422651, 22876797237929, 205891146443555, 1853020231898561, 16677181828806732, 150094635684419620 ]
[ "nonn", "easy" ]
A063824
[ 1, 9, 81, 225, 2025, 5625, 50625, 65025, 585225, 1625625, 14630625 ]
[ "nonn", "more" ]
A347237
[ 1, 0, 1, 6, 1, 0, 3, 6, 17, 0, 1, 6, 3, 0, 1, 42, 1, 0, 3, 6, 3, 0, 5, 6, 37, 0, 49, 18, 1, 0, 5, 78, 1, 0, 3, 102, 3, 0, 3, 6, 1, 0, 3, 6, 17, 0, 5, 42, 89, 0, 1, 18, 5, 0, 1, 18, 3, 0, 1, 6, 5, ...
[ "nonn", "mult" ]
A336116
[ 2, 5, 11, 19, 23, 47, 67, 79, 191, 271, 383, 1087, 1279, 4111, 5119, 6143, 16447, 20479, 81919, 262147, 263167, 786431, 1114111, 1310719, 16842751, 17825791, 1073758207, 4295032831, 4311744511, 17180131327, 21474836479, 51539607551, 824633720831, 116...
[ "nonn" ]
A111839
[ 0, 1, -6, 142, 31800, -159468264, -2481298801008, 1414130111428687400, 1.8273170230928303e+24, -8.994687454511972e+31, -9.262235489215917e+39 ]
[ "sign" ]
A029153
[ 1, 0, 1, 1, 1, 1, 3, 1, 3, 3, 4, 3, 7, 4, 7, 7, 9, 7, 13, 9, 14, 13, 17, 14, 22, 17, 24, 22, 28, 24, 35, 28, 38, 35, 43, 38, 52, 43, 56, 52, 63, 56, 74, 63, 79, 74, 88, 79, 101, 88, 108, 101, 119, 108, 134, ...
[ "nonn", "easy" ]
A263859
[ 1, 1, 1, 1, 3, 1, 1, 8, 6, 1, 1, 20, 31, 10, 1, 1, 55, 162, 84, 15, 1, 1, 163, 940, 734, 185, 21, 1, 1, 556, 6372, 7305, 2380, 356, 28, 1, 1, 2222, 52336, 86683, 35070, 6259, 623, 36, 1, 1, 10765, 534741, 1261371, 6194...
[ "nonn", "tabl" ]
A223190
[ 16, 256, 1138, 20016, 252544, 3407893, 52906752, 807057750, 12038960562, 208858564343, 3119961979390 ]
[ "nonn" ]
A366515
[ 27, 1183, 33033, 1115243, 35647837, 1160360119, 37555945909, 1217752812675, 39462728700549, 1279074017973223, 41455157103242616, 1343598904737387500, 43546986542670650000, 1.411391199574224e+21, 4.574424225054518e+22, 1.4826053238089935e+24 ]
[ "nonn", "easy" ]
A385516
[ 1, 4, 8, 9, 32, 64, 81, 841, 961 ]
[ "nonn", "base", "fini", "full" ]
A319907
[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 2, 1, 2, 2, 1, 1, 2, 2, 1, 2, 2, 1, 4, 1, 2, 2, 1, 2, 4, 1, 1, 2, 4, 1, 4, 1, 2, 4, 1, 1, 4, 2, 3, 2, 2, 1, 5, 2, 4, 2, 1, 1, 5, 1, 1, 4, 4...
[ "nonn" ]
A252178
[ 12, 49, 132, 285, 536, 917, 1464, 2217, 3220, 4521, 6172, 8229, 10752, 13805, 17456, 21777, 26844, 32737, 39540, 47341, 56232, 66309, 77672, 90425, 104676, 120537, 138124, 157557, 178960, 202461, 228192, 256289, 286892, 320145, 356196, 395197 ]
[ "nonn" ]
A170088
[ 1, 31, 930, 27900, 837000, 25110000, 753300000, 22599000000, 677970000000, 20339100000000, 610173000000000, 18305190000000000, 549155700000000000, 16474671000000000000, 494240130000000000000, 1.48272039e+22 ]
[ "nonn" ]
A024936
[ 0, -1, 1, 1, -1, 2, -1, 2, 2, 2, 3, 1, 3, 2, 3, 3, 3, 4, 3, 3, 3, 4, 3, 4, 3, 4, 4, 4, 5, 4, 5, 4, 4, 4, 5, 4, 5, 4, 5, 5, 5, 6, 5, 5, 5, 6, 5, 6, 5, 6, 5, 6, 5, 6, 5, 6, 6, 6, 7, 6, 7, 6, 6, ...
[ "sign" ]
A035189
[ 1, 2, 2, 3, 0, 4, 1, 4, 3, 0, 0, 6, 0, 2, 0, 5, 0, 6, 2, 0, 2, 0, 0, 8, 1, 0, 4, 3, 2, 0, 2, 6, 0, 0, 0, 9, 2, 4, 0, 0, 0, 4, 0, 0, 0, 0, 2, 10, 1, 2, 0, 0, 2, 8, 0, 4, 4, 4, 2, 0, 0, 4, 3, ...
[ "nonn", "easy", "mult" ]
A175975
[ 8, 12, 17, 22, 23, 27, 30 ]
[ "nonn", "base", "more", "less", "hard" ]
A189615
[ 65, 4225, 116100, 2482591, 68121839, 2076231513, 61652076124, 1785011303305, 52081392909734, 1531637258052071, 45087524679984920, 1325492265359151000, 38967877720497095000, 1.1460705662937133e+21, 3.371298061427586e+22 ]
[ "nonn" ]
A245215
[ 3, 6, 6, 3, 0, 4, 6, 9, 4, 6, 5, 3, 2, 7, 2, 6, 5, 6, 6, 8, 2, 4, 9, 4, 1, 3, 1, 4, 2, 9, 0, 9, 6, 6, 9, 2, 9, 9, 8, 4, 2, 7, 8, 8, 9, 3, 9, 2, 5, 4, 3, 1, 6, 0, 4, 1, 0, 3, 1, 0, 3, 8, 0, 6...
[ "nonn", "cons", "changed" ]
A080127
[ 24739954287740860, 48645161281738536, 72254704797687090, 95676260903887600, 118959989688273470, 142135049412622140, 165220513980969400, 188229829247429500, 211172979243258270 ]
[ "nonn" ]
A221706
[ 2, 4, 4, 15, 17, 77, 101, 119, 143, 250, 362, 1401, 31168, 88629, 184654, 259251, 298769, 4196069, 38538873, 616984562, 1975413034, 5345718056, 27843871196, 54516286512, 334398528973, 445879679625, 495957494385, 2450869042060, 2629541150528, 4088114099884 ]
[ "nonn" ]
A089444
[ 374653, 374669, 374677, 374681, 374683, 374687 ]
[ "fini", "full", "nonn" ]
A098921
[ 0, 9, 62, 211, 534, 1127, 2112, 3629, 5844, 8941, 13130, 18639, 25722, 34651, 45724, 59257, 75592, 95089, 118134, 145131, 176510, 212719, 254232, 301541, 355164, 415637, 483522, 559399, 643874, 737571, 841140, 955249, 1080592 ]
[ "nonn", "easy" ]
A065181
[ 0, 1, 2, 5, 3, 4, 6, 7, 14, 23, 17, 20, 8, 11, 12, 22, 13, 21, 9, 10, 16, 18, 15, 19, 24, 25, 26, 29, 27, 28, 54, 55, 86, 119, 95, 110, 62, 71, 78, 116, 79, 113, 65, 68, 92, 102, 89, 103, 30, 31, 38, 47, 41, 44...
[ "nonn" ]
A368332
[ 1, 1, 1, 2, 1, 1, 1, 3, 1, 1, 1, 2, 1, 1, 1, 4, 1, 1, 1, 2, 1, 1, 1, 3, 1, 1, 2, 2, 1, 1, 1, 5, 1, 1, 1, 2, 1, 1, 1, 3, 1, 1, 1, 2, 1, 1, 1, 4, 1, 1, 1, 2, 1, 2, 1, 3, 1, 1, 1, 2, 1, 1, 1, 6...
[ "nonn", "easy", "mult" ]
A279570
[ 1, 1, 2, 6, 22, 92, 423, 2091, 10950, 60120, 343453, 2029809, 12354661, 77168197, 493189283, 3217459119, 21382723456, 144518555231, 991885282987, 6904454991721, 48691257834999, 347542736059492, 2508603139285095, 18297609829743480, 134772911886028740 ]
[ "nonn" ]
A030604
[ 0, 1, 1, 2, 3, 5, 1, 2, 2, 1, 3, 3, 5, 4, 1, 3, 1, 2, 2, 5, 4, 0, 0, 1, 0, 2, 5, 1, 4, 2, 5, 2, 4, 5, 4, 4, 3, 2, 3, 1, 1, 2, 2, 1, 1, 5, 5, 4, 4, 3, 1, 2, 0, 5, 5, 1, 1, 5, 3, 1, 2, 2, 4, 0...
[ "nonn", "easy", "base" ]
A262385
[ 1, 60, 336, 21600, 133056, 825552000, 89100, 11435424000, 483113030400, 101889627840000, 1471926193920, 42280119968486400, 3425059028160, 209827678712652000, 1184296360402995700, 163066081742403830000, 1749151741873536000, 2.037335705159018e+28 ]
[ "nonn", "frac" ]
A100295
[ 1, 3, 14, 61, 269, 1184, 5213, 22951, 101046, 444873, 1958633, 8623232, 37965321, 167149115, 735903870, 3239948389, 14264452181, 62801801632, 276496162501, 1217323801087, 5359485727718, 23596094350545, 103886025056529, 457376803199488, 2013683168560465 ]
[ "nonn", "easy" ]
A341658
[ 29, 43, 53, 59, 61, 67, 83, 107, 157, 173, 193, 227, 277, 283, 317, 347, 563, 653, 733, 787, 877, 907, 997, 1213, 1237, 1283, 1307, 1523, 1867, 2083, 2693, 2797, 2803, 3253, 3413, 3517, 3643, 3677, 3733, 3803, 4253, 4363, 4547, 47...
[ "nonn" ]
A223798
[ 296, 87616, 16979881, 2844578252, 453578376041, 70950413903439, 11005258705825234, 1701108873516414500, 262573419115915020000, 4.05055474765993e+22, 6.24700837052401e+24 ]
[ "nonn" ]
A182005
[ 5, 7, 8, 17, 21, 23, 26, 31, 39, 40, 41, 45, 49, 51, 52, 53, 58, 62, 64, 67, 69, 78, 81, 82, 84, 87, 91, 93, 108, 113, 115, 116, 119, 121, 122, 128, 131, 135, 136, 139, 142, 151, 152, 155, 163, 170, 173, 174, 178, 181,...
[ "nonn", "base" ]
A244430
[ 1, 1, 2, 8, 44, 316, 2776, 28912, 347888, 4750064, 72548576, 1225540096, 22686824512, 456700011328, 9932944782464, 232113573798656, 5799735585095936, 154302762658308350, 4354977806995645000, 129961223706359610000, 4.088626884119703e+21, 1.3524642957493041e+23 ]
[ "nonn" ]
A225853
[ 1, 2, 0, 0, 3, 2, 0, 0, 4, 6, 0, 0, 7, 8, 0, 0, 13, 14, 0, 0, 19, 20, 0, 0, 29, 34, 0, 0, 43, 46, 0, 0, 62, 70, 0, 0, 90, 96, 0, 0, 126, 138, 0, 0, 174, 186, 0, 0, 239, 262, 0, 0, 325, 346, 0, 0, 435, 4...
[ "nonn" ]
A190273
[ 6, 10, 21, 26, 39, 55, 57, 74, 93, 111, 122, 146, 155, 201, 203, 253, 301, 305, 314, 327, 381, 386, 417, 471, 497, 543, 554, 597, 626, 633, 689, 737, 755, 791, 794, 842, 889, 905, 914, 921, 1011, 1027, 1055, 1081, 1082, 1137, ...
[ "nonn" ]
A066784
[ 1, 90, 392448, 411264, 804384, 871416, 1284192, 1935360, 7456512, 396168192, 24193572480, 43171285248, 54585498240, 63178786944, 123570274464, 730078562304, 823442861592, 1420069242240, 2354025332736, 2506251331584, 3606011136000, 3697798293504, 9951618862080 ]
[ "nonn" ]
A107217
[ 103, 163, 199, 397, 421, 499, 757, 883, 907, 991, 1021, 1087, 1123, 1237, 1291, 1543, 1567, 1609, 1621, 1699, 1753, 1873, 2113, 2539, 2671, 2731, 2797, 2803, 2953, 3259, 3391, 3433, 3463, 3499, 3613, 3631, 3733, 3793, 3853, 3877, 3919 ]
[ "nonn", "easy" ]
A144113
[ 1, 2, 1, 3, 1, 2, 4, 1, 1, 3, 5, 1, 1, 1, 4, 6, 1, 1, 1, 1, 5, 7, 1, 1, 1, 1, 1, 6, 8, 1, 1, 1, 1, 1, 1, 7, 9, 1, 1, 1, 1, 1, 1, 1, 8, 10, 1, 1, 1, 1, 1, 1, 1, 1, 9, 11, 1, 1, 1, 1, 1, 1, 1, ...
[ "nonn", "tabl" ]
A251099
[ 12664, 839758, 53009570, 3372537762, 214512524583, 13640572890821, 867470863709067, 55168625738829230, 3508516188029302300, 223126143031289740000, 1.418981143295693e+22, 9.02408000057786e+23 ]
[ "nonn" ]
A377538
[ 4, 352, 127664128 ]
[ "nonn", "more", "bref" ]
A016512
[ 4, 2, 3, 8, 1, 4, 11, 1, 68, 1, 12, 1, 2, 2, 1, 1, 32, 2, 2, 3, 1, 2, 4, 1, 1, 30, 2, 2, 1, 1, 3, 1, 106, 55, 9, 1, 4, 1, 1, 19, 1, 5, 32, 1, 1, 1, 4, 2, 1, 2, 3, 26, 1, 1, 2, 27, 4, 16, 2, 9, 3, ...
[ "nonn", "cofr" ]
A324251
[ -2, 2, -1, 2, -4, 4, -2, 4, -1, 1, -1, 4, -1, 4, -6, 6, -3, 6, -2, 6, -1, 1, -1, 1, -6, 1, -1, 1, -1, 6, -1, 2, -1, 6, -1, 6, -8, 8, -4, 8, -2, 1, -3, 1, -2, 8, -2, 8, -1, 1, -2, 1, -1, 8, -1, 2, -4, 2,...
[ "sign", "tabf" ]
A261131
[ 0, 0, 0, 1, 1, 2, 3, 4, 5, 7, 8, 10, 11, 13, 13, 15, 14, 15, 14, 14, 12, 12, 9, 9, 8, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 6, 6, 6, 6, 6, 6, ...
[ "nonn", "base", "look" ]
A260738
[ 0, 1, 2, 1, 3, 1, 4, 1, 2, 1, 5, 1, 6, 1, 2, 1, 7, 1, 3, 1, 2, 1, 8, 1, 9, 1, 2, 1, 10, 1, 4, 1, 2, 1, 3, 1, 11, 1, 2, 1, 12, 1, 13, 1, 2, 1, 14, 1, 3, 1, 2, 1, 15, 1, 5, 1, 2, 1, 4, 1, 16, 1, ...
[ "nonn" ]
A360089
[ 1, -1, -4, -1, 21, 29, -80, -244, 153, 1473, 836, -6920, -12220, 23209, 91213, -21511, -510680, -457965, 2210520, 4921941, -6271749, -33288595, -3876765, 173223185, 214943855, -682969376, -1912499375, 1498348275, 11882164650, 5332839025, -57402248250, -9...
[ "sign", "easy" ]
A375206
[ 1, 7, 6, 2, 1, 5, 5, 4, 2, 3, 8, 7, 1, 6, 3, 16, 15, 11, 14, 11, 12, 3, 2, 4, 1, 2, 5, 13, 19, 18, 14, 17, 14, 15, 3, 16, 6, 5, 1, 4, 1, 2, 10, 3, 13, 14, 13, 9, 12, 9, 10, 2, 11, 5, 8, 9, 8, 2, 7, ...
[ "tabl", "nonn" ]
A212182
[ 0, 1, 2, 1, 1, 2, 1, 3, 1, 2, 2, 4, 1, 2, 1, 1, 3, 1, 1, 2, 2, 1, 4, 1, 1, 3, 2, 1, 4, 2, 1, 3, 1, 1, 1, 2, 2, 1, 1, 4, 1, 1, 1, 3, 2, 1, 1, 4, 2, 1, 1, 3, 3, 1, 1, 5, 2, 1, 1, 4, 3, 1, 1, 6...
[ "nonn", "tabf" ]
A224675
[ 308, 470, 617, 864, 1166, 1608, 2230, 3157, 4554, 6711, 10083, 15415, 23907, 37504, 59351, 94538, 151300, 242962, 391084, 630551, 1017808, 1644185, 2657457, 4296729, 6948881, 11239898, 18182645, 29415972, 47591594, 77000076, 124583698 ]
[ "nonn" ]
A102643
[ 3, 5, 11, 17, 17, 13, 43, 257, 257, 41, 683, 4099, 2731, 2731, 331, 65537, 65537, 262147, 174763, 174763, 61681, 199729, 2796203, 2796203, 4051, 9586981, 87211, 15790321, 15790321, 1073741827, 715827883, 715827883, 6700417, 26317, 86171 ]
[ "nonn" ]
A334838
[ 1, 2, 12, 35, 37, 77, 97, 100, 118, 136, 137, 152, 183, 184, 190, 212, 231, 258, 290, 352, 421, 462, 482, 487, 690, 730, 741, 960, 1110, 1111, 1168, 1169, 1227, 1285, 1328, 1396, 1417, 1621, 2074, 2119, 2318, 2578, 2603, 2652, 2...
[ "nonn" ]
A274044
[ 65, 85, 130, 145, 170, 185, 205, 221, 265, 290, 305, 365, 370, 377, 410, 442, 445, 481, 485, 493, 505, 530, 533, 545, 565, 610, 629, 685, 689, 697, 730, 745, 754, 785, 793, 865, 890, 901, 905, 949, 962, 965, 970, 985, 986, 101...
[ "nonn" ]
A210854
[ 3, 28, 448, 12224, 582976, 48752256, 7203712512, 1886877853824, 879055341435904, 730130107330428500, 1.083358734004347e+21, 2.876398810379834e+24, 1.36846867724661e+28, 1.1680050725011727e+32 ]
[ "nonn" ]
A020918
[ 1, 14, 126, 924, 6006, 36036, 204204, 1108536, 5819814, 29745716, 148728580, 730122120, 3528923580, 16830250920, 79342611480, 370265520240, 1712478031110, 7857252142740, 35794148650260 ]
[ "nonn", "easy" ]
A313358
[ 1, 4, 9, 18, 23, 24, 30, 36, 45, 48, 53, 56, 68, 70, 73, 80, 83, 92, 98, 100, 103, 118, 117, 120, 130, 130, 139, 148, 147, 150, 168, 164, 167, 180, 177, 186, 198, 194, 197, 218, 211, 214, 230, 224, 233, 248, 241, 244, 26...
[ "nonn" ]