id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A275997
[ 134, 284, 410, 632, 1292, 1628, 4064, 9752, 12224, 22712, 66992, 72944, 403988, 556544, 2161664, 2330528, 8517632, 13228352, 14563832, 15422912, 20732792, 89472632, 134733824, 150511232, 283551872, 537903104, 731670272, 915473696, 1846850576, 2149548032, 2...
[ "nonn" ]
A362937
[ 0, 0, 1, 2, 4, 4, 7, 10, 14, 18, 23, 26, 32, 38, 43, 50, 58, 64, 73, 80, 90, 100, 111, 120, 132, 144, 157, 168, 182, 192, 207, 222, 238, 254, 269, 284, 302, 320, 339, 356, 376, 392, 413, 434, 452, 474, 497, 518, 542, 5...
[ "nonn" ]
A027965
[ 3, 7, 15, 28, 47, 73, 107, 150, 203, 267, 343, 432, 535, 653, 787, 938, 1107, 1295, 1503, 1732, 1983, 2257, 2555, 2878, 3227, 3603, 4007, 4440, 4903, 5397, 5923, 6482, 7075, 7703, 8367, 9068, 9807, 10585, 11403, 12262, 13163, 14107, ...
[ "nonn", "easy" ]
A233411
[ 0, 0, 2, 4, 12, 24, 56, 112, 240, 480, 992, 1984, 4032, 8064, 16256, 32512, 65280, 130560, 261632, 523264, 1047552, 2095104, 4192256, 8384512, 16773120, 33546240, 67100672, 134201344, 268419072, 536838144, 1073709056, 2147418112, 4294901760, 85898035...
[ "nonn", "easy" ]
A192511
[ 0, 0, 18, 112, 1904, 17184, 229848, 1686008, 29713758 ]
[ "nonn", "hard", "more" ]
A388170
[ 2, 3, 6, 9, 5, 0, 6, 3, 3, 5, 2, 3, 0, 8, 9, 0, 8, 9, 0, 5, 3, 4, 0, 8, 0, 8, 5, 8, 1, 5, 5, 9, 5, 5, 9, 3, 3, 7, 3, 2, 6, 8, 2, 9, 8, 7, 7, 2, 8, 1, 4, 3, 0, 5, 8, 2, 6, 6, 5, 3, 6, 5, 0, 0...
[ "nonn", "cons" ]
A107653
[ 1, -6, 21, -68, 198, -510, 1248, -2904, 6393, -13604, 28044, -55956, 108982, -207552, 386622, -707216, 1271970, -2250582, 3925780, -6757272, 11483232, -19290824, 32057352, -52722744, 85884503, -138644292, 221885805, -352241792, 554892894 ]
[ "sign" ]
A136546
[ 0, 0, 1, 1, 1, 3, 3, 4, 4, 4, 5, 7, 7, 8, 9, 10, 9, 10, 11, 11, 11, 13, 13, 15, 15, 16, 16, 18, 18, 19, 20, 21, 20, 21, 22, 22, 22, 24, 25, 25, 25, 26, 26, 28, 28, 29, 30, 32, 31, 32 ]
[ "nonn", "uned" ]
A240416
[ 57, 529, 10749, 148536, 1765436, 33373526, 425530595, 5897838681, 95307517175, 1211349848865, 18418502466795, 271271920530483, 3640504188151747, 55380807100830024, 781519568000794100, 10995455837187189000 ]
[ "nonn" ]
A155264
[ 1, 13, 37, 79, 343, 3883, 32621, 226143, 2442908, 45791330, 912526379, 19385105798, 531941059542 ]
[ "nonn" ]
A130764
[ 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90 ]
[ "base", "easy", "fini", "full", "nonn" ]
A080301
[ 0, -1, 0, -1, -1, -1, -1, -1, -1, -1, 0, -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, 0, -1, 1, -1, -1, -1, -1, -1, 2, -1, 3, -1, ...
[ "sign" ]
A044440
[ 7, 16, 23, 25, 34, 43, 50, 52, 61, 71, 77, 79, 88, 97, 104, 106, 115, 124, 131, 133, 142, 152, 158, 160, 169, 178, 185, 187, 215, 223, 233, 239, 241, 250, 259, 266, 268, 277, 286, 293, 295, 304, 314, 320, 322, 331, 340, 34...
[ "nonn", "base" ]
A314075
[ 1, 5, 11, 15, 22, 27, 32, 37, 43, 48, 53, 58, 65, 69, 75, 80, 85, 91, 95, 102, 107, 112, 117, 123, 128, 133, 138, 145, 149, 155, 160, 165, 171, 175, 182, 187, 192, 197, 203, 208, 213, 218, 225, 229, 235, 240, 245, 251, 2...
[ "nonn" ]
A301767
[ 1, 1, 1, 3, 4, 7, 9, 15, 21, 32, 45, 59, 89, 117, 162, 225, 309, 394, 538, 707, 929, 1240, 1613, 2055, 2677, 3517, 4439, 5724, 7288, 9222, 11671, 14809, 18480, 23226, 29138, 36501, 45373, 56438, 69920, 86426, 106715, 131171, 161428,...
[ "nonn" ]
A364487
[ 1, 0, 1, 0, 2, 1, 5, 2, 13, 5, 36, 16, 96, 45, 262, 128, 720, 368, 1991, 1047, 5549, 2995, 15583, 8607, 44027, 24788, 125043, 71620, 356706, 207412, 1021318, 601719, 2933861, 1748874, 8452723, 5091776, 24417793, 14848210, 70706750, 433649...
[ "nonn" ]
A270253
[ 0, 48, 4428, 772056, 308256072, 302595682944, 754152642763392, 4862374937595547000, 8.202118577337122e+22, 3.647082581376582e+27, 4.2970282458369596e+32 ]
[ "nonn" ]
A265354
[ 0, 1, 3, 2, 4, 9, 6, 10, 12, 7, 5, 19, 8, 13, 27, 18, 28, 36, 21, 11, 57, 24, 37, 30, 15, 31, 39, 22, 16, 64, 23, 14, 55, 20, 46, 58, 25, 17, 73, 26, 40, 81, 54, 82, 108, 63, 29, 171, 72, 109, 90, 45, 85, 117, ...
[ "nonn", "base" ]
A032035
[ 1, 1, 1, 3, 13, 77, 573, 5143, 54025, 650121, 8817001, 133049339, 2210979381, 40118485237, 789221836741, 16730904387183, 380227386482641, 9221550336940240, 237724953543108770, 6491255423787077000, 187156557809878800000, 5.681772224922981e+21 ]
[ "nonn", "eigen" ]
A389673
[ 1, 2, 2, 2, 2, 2, 2, 2, 2, 1, 9, 9, 5, 6, 8, 10, 5, 11, 1, 10, 4, 9, 7, 5, 3, 10, 10, 1, 11, 9, 4, 9, 11, 2, 7, 5, 1, 8, 12, 4, 10, 9, 6, 10, 10, 1, 7, 5, 5, 9, 12, 5, 10, 9, 1, 13, 6, 2, 7, 8, 5,...
[ "base", "nonn" ]
A192753
[ 0, 1, 8, 20, 43, 82, 148, 257, 436, 728, 1203, 1974, 3224, 5249, 8528, 13836, 22427, 36330, 58828, 95233, 154140, 249456, 403683, 653230, 1057008, 1710337, 2767448, 4477892, 7245451, 11723458, 18969028, 30692609, 49661764, 80354504, 130016403 ]
[ "nonn" ]
A341589
[ 1, 2, 40, 1485, 81088, 5856900, 526685269, 56704848200, 7112345477952, 1018548226480356, 163987811350464670, 29321558852248050000, 5.764958268855542e+21, 1.2361507562153978e+24, 2.870863929210146e+26, 7.178958975485525e+28, 1.9231403740347428e+31 ]
[ "nonn" ]
A155620
[ 1, 12, 96, 792, 6816, 60072, 535536, 4799352, 43112256, 387682632, 3487832976, 31385253912, 282446313696, 2541932937192, 22877060890416, 205892205836472, 1853024483819136, 16677198879535752, 150094704016475840 ]
[ "nonn", "easy" ]
A275905
[ 1, 5, 25, 137, 757, 4181, 23089, 127505, 704125, 3888413, 21473113, 118581689, 654847621, 3616286885, 19970341825, 110282885537, 609018861517, 3363205196141, 18572740363369, 102564864314825, 566397375191125, 3127835138929013, 17272948436630352, 95386979953377330, 5267...
[ "nonn", "easy" ]
A201990
[ 1, 1, 7, 95, 1969, 55201, 1956375, 83935039, 4230528353, 245059707841, 16043680004903, 1171567218325151, 94415150206330640, 8323801562833776000, 796927800013657000000, 8.234252954566623e+22, 9.132868398860302e+24, 1.0822877922411618e+27 ]
[ "nonn" ]
A157786
[ 14112, 80539, 201416, 376743, 606520, 890747, 1229424, 1622551, 2070128, 2572155, 3128632, 3739559, 4404936, 5124763, 5899040, 6727767, 7610944, 8548571, 9540648, 10587175, 11688152, 12843579, 14053456, 15317783, 16636560, 18009787, 19437464, 20919591 ]
[ "nonn", "easy" ]
A043713
[ 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 22, 33, 44, 55, 66, 77, 88, 99, 101, 102, 103, 104, 105, 106, 107, 108, 109, 111, 120, 121, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 134, 135, 136, 137, 138, 139, 140, 141, 142, ...
[ "nonn", "base" ]
A361879
[ 0, 0, 0, 2, 0, 2, 0, 2, 0, 0, 0, 4, 0, 0, 0, 4, 0, 0, 0, 4, 0, 0, 0, 10, 0, 0, 0, 4, 0, 6, 0, 4, 0, 0, 0, 6, 0, 0, 0, 8, 0, 6, 0, 0, 0, 0, 0, 14, 0, 0, 0, 0, 0, 6, 0, 8, 0, 0, 0, 16, 0, 0, 0, ...
[ "nonn", "look" ]
A054332
[ 5, 440, 16016, 366080, 6223360, 85995520, 1018716160, 10711072768, 102385254400, 905301196800, 7501067059200, 58822597017600, 439993025691648, 3158924287016960, 21879051958353920, 146801380881858560, 957545370752122900, 6089666693993333000, 37854684854553150000 ]
[ "easy", "nonn" ]
A054156
[ 1, 1, 2, 2, 5, 4, 12, 14, 27, 39, 77, 116, 223, 366, 679, 1206, 2249, 4077, 7684, 14262, 26997, 50885, 96908, 184270, 352692, 674963, 1296828, 2493344, 4806077, 9272049, 17920859, 34668378, 67158970, 130213873, 252745350, 490980258 ]
[ "nonn" ]
A380222
[ 2, 6, 6, 12, 18, 30, 42, 60, 90, 126, 210, 252, 420, 630, 840, 1260, 1680, 2730, 3276, 5460, 8190, 10920, 16380, 21840, 32760, 40950, 65520, 90090, 120120, 180180, 253890, 360360, 507780, 720720, 1015560, 1332240, 2031120, 2792790, 3996720,...
[ "nonn" ]
A116375
[ 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 1, 1, 0, 0, 0, 1, 1, 0, 0, 1, 1, 1, 0, 0, 2, 1, 1, 0, 1, 2, 1, 1, 0, 2, 2, 1, 1, 1, 3, 2, 1, 1, 3, 3, 2, 1, 2, 4, 3, 2, 1, 4, 5, 3, 2, 2, 6, 5, 3, 2, 5...
[ "nonn", "base" ]
A253950
[ 1, 1, 2, 8, 44, 308, 2641, 27120, 332507, 5035455 ]
[ "nonn", "hard", "more" ]
A007791
[ 1, 1, 1, 16, 0, 1, 1, 256, 81, 0, 4641, 16, 1, 1, 0, 4096, 1, 81, 721, 0, 1, 4641, 1, 256, 78125, 1, 6561, 16 ]
[ "nonn", "more", "changed" ]
A173934
[ 1, 1, 3, 1, 3, 4, 1, 3, 9, 1, 3, 9, 13, 1, 3, 7, 9, 19, 21, 25, 27, 1, 3, 9, 10, 27, 30, 1, 3, 4, 9, 10, 12, 13, 27, 28, 30, 31, 36, 37, 39, 40, 5, 11, 15, 33, 45, 47, 5, 15, 41, 45, 47, 59, 7, 16, 21, ...
[ "nonn", "tabf" ]
A084490
[ 1, 2, 3, 5, 4, 6, 7, 8, 9, 11, 10, 13, 12, 14, 17, 15, 16, 19, 20, 18, 23, 22, 21, 24, 25, 26, 27, 28, 29, 31, 30, 32, 34, 33, 35, 36, 39, 37, 38, 40, 42, 43, 41, 44, 47, 46, 45, 49, 48, 50, 51, 53, 52, 55, 5...
[ "nonn" ]
A092103
[ 3, 3, 13, 638, 3, 3, 25, 3, 18, 26, 15, 3, 27, 24, 17, 23, 13, 3, 45, 3, 3, 43038, 7, 74, 44, 63, 3, 1273, 3, 3515, 7, 38, 3, 3, 7, 3, 74, 526, 288, 3, 19, 3, 3, 41, 11, 59, 3, 31, 65, 176, 3, 3, 3, 20, 3, ...
[ "nonn" ]
A377210
[ 1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 16, 21, 24, 26, 30, 34, 42, 48, 55, 60, 68, 78, 89, 110, 120, 126, 144, 178, 180, 192, 204, 233, 243, 264, 270, 288, 300, 312, 324, 330, 360, 377, 466, 480, 534, 540, 576, 600, 610, 621...
[ "nonn", "easy", "base" ]
A059089
[ 2, 3, 27, 18209, 2369751602470, 5.960531437867327e+33, 4.790478361525057e+86 ]
[ "easy", "nonn" ]
A229802
[ 1, -2, 4, -3, 1, 2, -2, 0, 3, -2, 2, -2, 4, -6, 4, 1, -2, 4, 0, -3, 2, -4, 4, 0, 1, 2, 0, -4, 0, 2, 2, -2, 8, -6, -2, 1, -2, 0, 6, 0, 2, -4, 4, -6, 3, 2, -2, 4, -3, -2, 2, -2, 4, 0, 2, 0, 0, 0, 0, -...
[ "sign" ]
A265072
[ 1, 3, 6, 10, 16, 25, 38, 57, 86, 130, 196, 295, 444, 669, 1008, 1518, 2286, 3443, 5186, 7811, 11764, 17718, 26686, 40193, 60536, 91175, 137322, 206826, 311508, 469173, 706638, 1064293, 1602970, 2414290, 3636248, 5476683, 8248628, 12423553, ...
[ "nonn", "easy" ]
A338251
[ 0, 1, 2, 3, 5, 4, 8, 9, 7, 6, 10, 11, 13, 12, 20, 21, 19, 18, 14, 15, 17, 16, 32, 33, 31, 30, 34, 35, 37, 36, 28, 29, 27, 26, 22, 23, 25, 24, 40, 41, 39, 38, 42, 43, 45, 44, 52, 53, 51, 50, 46, 47, 49, 48, 80...
[ "nonn", "look", "base" ]
A047081
[ 1, 2, 3, 6, 11, 20, 37, 68, 125, 230, 423, 778, 1431, 2632, 4841, 8904, 16377, 30122, 55403, 101902, 187427, 344732, 634061, 1166220, 2145013, 3945294, 7256527, 13346834, 24548655, 45152016, 83047505, 152748176, 280947697, 516743378, 950439251, 1...
[ "easy", "nonn" ]
A348294
[ 9, 9, 9, 9, 0, 6, 0, 1, 2, 4, 1, 2, 6, 6, 9, 8, 8, 5, 2, 6, 1, 9, 2, 5, 1, 5, 4, 5, 6, 7, 4, 5, 7, 7, 1, 9, 6, 4, 2, 2, 3, 2, 5, 1, 4, 3, 5, 5, 2, 7, 4, 8, 4, 4, 5, 5, 7, 3, 9, 2, 8, 9, 2, 3...
[ "nonn", "cons" ]
A275294
[ 1, 34, 1035, 31346, 958708, 29677572, 929442097, 29416786597, 939795181248, 30273240306244, 982317847204631, 32081167538512120, 1053762976292882800, 34790825470327030000, 1.153951843926244e+21, 3.8433994194836315e+22, 1.2849268172267522e+24 ]
[ "nonn" ]
A140200
[ 0, 1, 2, 2, 3, 5, 5, 6, 7, 7, 9, 10, 10, 11, 12, 12, 13, 15, 15, 16, 18, 18, 19, 20, 20, 21, 22, 22, 23, 24, 24, 25, 26, 26, 28, 29, 29, 30, 31, 31, 33, 34, 34, 35, 36, 36, 37, 38, 38, 39, 40, 40, 41, 42, 42,...
[ "nonn" ]
A298480
[ 1, 2, 6, 3, 12, 4, 8, 24, 120, 30, 10, 5, 15, 60, 20, 40, 280, 56, 14, 7, 21, 42, 168, 84, 28, 140, 35, 70, 210, 105, 420, 840, 7560, 1080, 216, 54, 18, 9, 27, 108, 36, 72, 360, 90, 45, 135, 270, 1890, 378, 126, 63, ...
[ "nonn" ]
A207515
[ 2, 16, 98, 1307, 29622, 1048423, 54373655, 4964342828, 715483286848, 161734351034666, 59741686819322040, 35917251659399987000, 3.45082537203265e+22, 5.3717705561862885e+25 ]
[ "nonn" ]
A195489
[ 1, 8, 1, 7, 3, 6, 3, 6, 0, 0, 5, 7, 5, 5, 1, 7, 6, 2, 3, 7, 6, 2, 6, 3, 8, 9, 1, 1, 6, 4, 7, 5, 9, 5, 6, 6, 8, 5, 4, 1, 3, 7, 5, 2, 6, 2, 5, 3, 1, 7, 7, 8, 7, 3, 9, 7, 1, 8, 3, 3, 8, 4, 8, 0...
[ "nonn", "cons" ]
A051762
[ 8, 7, 0, 0, 0, 3, 6, 6, 2, 5, 2, 0, 8, 1, 9, 4, 5, 0, 3, 2, 2, 2, 4, 0, 9, 8, 5, 9, 1, 1, 3, 0, 0, 4, 9, 7, 1, 1, 9, 3, 2, 9, 7, 9, 4, 9, 7, 4, 2, 8, 9, 2, 0, 9, 2, 1, 5, 9, 6, 6, 7, 2, 7, 8...
[ "nonn", "cons" ]
A145150
[ 1, 36, 870, 18150, 369303, 7698834, 166748153, 3751722975, 87886591793, 2152001539688, 55209634265136, 1483339949950248, 41681455251697940, 1223731327819009800, 37510006764224470000, 1.1991644908277554e+21 ]
[ "nonn" ]
A057187
[ 3, 5, 7, 13, 37, 347, 17597, 59183, 80761, 210599, 394579 ]
[ "nonn" ]
A264368
[ 1, 28, 784, 7168, 65536, 730368, 8139609, 86397399, 917060089, 9745523645, 103564894225, 1098865637220, 11659411209744, 123652174760256, 1311374995519744, 13905429141268656, 147449021266573570 ]
[ "nonn" ]
A091746
[ 1, 30, 12, 1, 2700, 1920, 426, 36, 1, 491400, 478800, 162540, 25344, 1956, 72, 1, 150368400, 181440000, 80451000, 17624880, 2130660, 147840, 5820, 120, 1, 69470200800, 98424849600, 52905560400, 14618016000, 2346624000, 232202880 ]
[ "nonn", "easy", "tabf" ]
A330055
[ 1, 0, 0, 0, 0, 0, 1, 1, 3, 5, 16, 24, 90, 179, 567, 1475, 4623, 13650, 44475, 144110, 492017, 1706956, 6124330, 22442687, 84406276, 324298231, 1273955153, 5106977701, 20885538133, 87046940269, 369534837538, 1596793560371, 7019424870960, 3137439419753...
[ "nonn" ]
A344199
[ 18, 36, 60, 252, 708, 834, 900, 2178, 7722, 7980 ]
[ "nonn", "hard", "more" ]
A157090
[ 1, -1, -165, 503, 138765, -707281, -285907545, 2041111463, 1096969928505, -10069440665761, -6762374583377325, 75868751534107220, 61139485855033510000, -810655797030264200000, -7.621497426781408e+23, 1.166011842638214e+25, 1.2528483932161592e+28 ]
[ "sign", "frac" ]
A386622
[ 1, 4, 6, 9, 6, 24, 8, 18, 19, 22, 12, 61, 14, 43, 46, 35, 18, 74, 20, 44, 44, 46, 24, 123, 27, 54, 56, 87, 30, 182, 32, 68, 68, 70, 72, 184, 38, 78, 80, 86, 42, 254, 44, 92, 138, 94, 48, 245, 51, 104, 104, 108, 5...
[ "nonn" ]
A360281
[ 1, 2, 3, 5, 4, 9, 13, 11, 6, 17, 23, 8, 31, 39, 7, 46, 53, 33, 43, 19, 62, 27, 89, 29, 59, 22, 81, 103, 92, 15, 107, 61, 12, 73, 85, 79, 41, 10, 51, 122, 173, 295, 18, 313, 331, 14, 69, 83, 38, 121, 159, 20, 179,...
[ "nonn" ]
A322809
[ 1, 2, 3, 4, 3, 5, 3, 6, 6, 7, 3, 8, 3, 9, 9, 10, 3, 11, 3, 12, 12, 13, 3, 14, 14, 15, 15, 16, 3, 17, 3, 18, 18, 19, 19, 20, 3, 21, 21, 22, 3, 23, 3, 24, 24, 25, 3, 26, 26, 27, 27, 28, 3, 29, 29, 30, 30, ...
[ "nonn" ]
A053545
[ 0, 1, 5, 19, 63, 191, 543, 1471, 3839, 9727, 24063, 58367, 139263, 327679, 761855, 1753087, 3997695, 9043967, 20316159, 45350911, 100663295, 222298111, 488636415, 1069547519, 2332033023, 5066719231, 10972299263, 23689428991, 51002736639, 109521666047, 2346...
[ "nonn", "easy", "nice" ]
A000801
[ 2, 4, 6, 10, 16, 26, 44, 76, 132, 234, 420, 761, 1391, 2561, 4745, 8841, 16551, 31114, 58708, 111136, 211000, 401650, 766372, 1465422, 2807599, 5388709, 10359735, 19946715, 38459505, 74250899, 143524565, 277742293, 538043341, 1043333611, 2025040421...
[ "nonn" ]
A017076
[ 0, 68719476736, 281474976710656, 36520347436056580, 1152921504606847000, 16777216000000000000, 149587343098087740000, 951166013805414000000, 4.722366482869645e+21, 1.9408409961765343e+22, 6.8719476736e+22 ]
[ "nonn", "easy" ]
A338727
[ 1, 1, 9, 81, 784, 8100, 88209, 1002001, 11778624, 142420356, 1763160100, 22268399076, 286105172544, 3730846771600, 49286086364025, 658580586980625, 8890060997894400, 121099761397088100, 1663131325207760100, 23009839285003272000, 320486852887891540000, 4.4911840126598235e+21...
[ "nonn", "easy" ]
A078270
[ 1, 111, 12021, 1293931, 138575841, 14775857751, 1569413139661, 166124050421571, 17530678687703480, 101854077969780440000, 1.0193764178979881e+24, 1.020285592370899e+28 ]
[ "base", "nonn" ]
A300365
[ 5297, 15647, 22073, 22501, 26309, 34721, 43499, 44111, 48809, 57529, 58171, 66797, 69151, 70199, 74551, 76493, 86959, 91297, 93169, 93199, 94343, 102217, 110777, 112289, 113093, 132361, 133493, 135461, 139921, 146021, 155303, 156521, 162557, 163753, ...
[ "nonn" ]
A059938
[ 0, 4, 31, 141, 506, 1590, 4593, 12523, 32740, 82908, 204755, 495561, 1179582, 2768818, 6422437, 14745495, 33554312, 75759480, 169869159, 378535765, 838860610, 1849687854, 4060086041, 8875147011, 19327352556, 41943039700 ]
[ "nonn", "easy" ]
A026192
[ 1, 4, 2, 8, 3, 12, 14, 5, 6, 20, 7, 24, 26, 9, 10, 32, 11, 36, 38, 13, 42, 44, 15, 16, 50, 17, 18, 56, 19, 60, 62, 21, 22, 68, 23, 72, 74, 25, 78, 80, 27, 28, 86, 29, 30, 92, 31, 96, 98, 33, 34, 104, 35, 108, ...
[ "nonn" ]
A233694
[ 1, 2, 3, 5, 11, 23, 49, 102, 212, 443, 926, 1939, 4064, 8509, 17816, 37303, 78105, 163544, 342454, 717076, 1501502, 3144024, 6583334, 13784969 ]
[ "nonn", "more" ]
A320933
[ 0, 0, 2, 5, 13, 28, 60, 123, 251, 506, 1018, 2041, 4089, 8184, 16376, 32759, 65527, 131062, 262134, 524277, 1048565, 2097140, 4194292, 8388595, 16777203, 33554418, 67108850, 134217713, 268435441, 536870896 ]
[ "nonn", "easy" ]
A322374
[ 1, 6, 12, 30, 60, 120, 180, 360, 420, 720, 840, 1260, 2520, 5040, 7920, 9240, 13860, 18480, 25200, 27720, 50400, 55440, 83160, 110880, 138600, 163800, 166320, 240240, 277200, 327600, 332640, 360360, 554400, 720720, 1081080, 1413720, 1441440, ...
[ "nonn" ]
A067272
[ 1, 19, 199, 1999, 19999, 199999, 1999999, 19999999, 199999999, 1999999999, 19999999999, 199999999999, 1999999999999, 19999999999999, 199999999999999, 1999999999999999, 20000000000000000, 200000000000000000, 2000000000000000000, 20000000000000000000, 200000000000000000000 ]
[ "nonn", "easy" ]
A276011
[ 0, 3, 1, 2, 14, 17, 15, 16, 10, 13, 11, 12, 4, 5, 8, 9, 6, 7, 78, 81, 79, 80, 92, 95, 93, 94, 88, 91, 89, 90, 82, 83, 86, 87, 84, 85, 60, 63, 61, 62, 74, 77, 75, 76, 70, 73, 71, 72, 64, 65, 68, 69, 66, 67, 42...
[ "nonn", "base" ]
A068635
[ 3, 5, 211049, 253679, 41887255409, 73768891456259 ]
[ "nonn" ]
A240725
[ 23, 31, 43, 521, 1061, 2153, 3457, 4019, 4943, 5477, 6991, 7577, 8291, 8539, 10993, 11953, 14767, 17957, 18439, 26321, 40993, 41047, 53269, 57917, 71347, 79979, 80989, 88997, 91499, 92269, 94561, 108457, 109111, 112019, 117671, 121763, 133103, ...
[ "nonn" ]
A000201
[ 1, 3, 4, 6, 8, 9, 11, 12, 14, 16, 17, 19, 21, 22, 24, 25, 27, 29, 30, 32, 33, 35, 37, 38, 40, 42, 43, 45, 46, 48, 50, 51, 53, 55, 56, 58, 59, 61, 63, 64, 66, 67, 69, 71, 72, 74, 76, 77, 79, 80, 82, 84, 85, 87, ...
[ "nonn", "easy", "nice" ]
A238909
[ 261, 4287, 408726, 22778013, 1474369337, 91433307852, 5739848041311, 359075051396597, 22485455035768750, 1407650415969195300, 88129886999002400000, 5.517489584652727e+21, 3.454321219111527e+23 ]
[ "nonn" ]
A131450
[ 0, 1, 0, 1, 1, 1, 1, 1, 2, 4, 6, 6, 7, 8, 11, 18, 23, 29, 39, 52, 71, 99, 124, 160, 220, 302, 403, 532, 707, 936, 1249, 1668, 2220, 2976, 3966, 5278, 7028, 9386, 12531, 16696, 22246, 29622, 39540, 52768, 70395, 93795, 124977...
[ "nonn" ]
A110998
[ 2, 4, 16, 38, 40, 44, 70, 82, 86, 88, 116, 128, 130, 142, 152, 158, 170, 178, 194, 224, 226, 238, 262, 268, 298, 304, 310, 320, 346, 352, 362, 364, 368, 392, 406, 418, 434, 446, 452, 458, 460, 472, 478, 490, 494 ]
[ "nonn", "easy" ]
A349035
[ 1, 1, 2, 1, 9, 6, 165, 97, 10970, 8617, 2838793, 1206206, 2912348749, 3338391105, 11938619074866, -3485058191151, 195607339607544400, 505337929567029950, 1.282052914025516e+22, -4.059526353127488e+22, 3.360756421633194e+27 ]
[ "sign" ]
A337701
[ 9, 12, 15, 18, 49, 56, 252, 280, 308, 312, 650, 700, 1845, 1968, 2091, 1962, 3401, 3580, 7056, 7392, 7728, 7560, 11050, 11492, 19305, 20020, 20735, 19320, 27497, 28384, 43164, 44472, 45780, 45720, 57794, 59356, 84357, 86520, 88683, 86730,...
[ "nonn" ]
A192338
[ 1, 2, 6, 18, 54, 166, 514, 1610, 5078, 16118, 51394, 164474, 527798, 1697254, 5466498, 17627370, 56892246, 183742358 ]
[ "nonn" ]
A273979
[ 1, 11, 11, 11, 1011, 10011, 111011, 11, 1011, 110011, 10111011, 1100000011, 101100001011, 1001100110011, 11101110111011, 11, 1011, 110011, 10111011, 1100000011, 101100001011, 11001100110011, 1011101110111011, 110000000000000020, 10110000000000000000 ]
[ "nonn", "easy" ]
A246046
[ 2, 3, 5, 6, 8, 9, 11, 12, 13, 15, 16, 18, 19, 21, 22, 24, 25, 27, 28, 30, 31, 33, 34, 35, 37, 38, 40, 41, 43, 44, 46, 47, 49, 50, 52, 53, 55, 56, 57, 59, 60, 62, 63, 65, 66, 68, 69, 71, 72, 74, 75, 77, 78, 79, ...
[ "nonn", "easy" ]
A095876
[ 1, 1, 16, 1, 512, 19683, 1, 65536, 43046721, 4294967296, 1, 33554432, 847288609443, 1125899906842624, 298023223876953150, 1, 68719476736, 150094635296999140, 4.722366482869645e+21, 1.4551915228366852e+25, 1.0314424798490537e+28 ]
[ "easy", "nonn", "tabl" ]
A074291
[ 1, 2, 5, 6, 7, 8, 12, 13, 17, 18, 23, 24, 25, 26, 29, 30, 31, 36, 37, 38, 41, 42, 43, 44, 49, 50, 51, 54, 55, 56, 59, 60, 61, 62, 66, 67, 71, 72, 73, 74, 79, 80, 84, 85, 90, 91, 92, 95, 96, 97, 100, 101, 102, 1...
[ "nonn", "easy" ]
A263698
[ 1, 2, 6, 24, 78, 110, 169, 301, 616, 1373, 2908, 5908, 11544, 22644, 45460, 91977, 186645, 376625, 756105, 1518054, 3049762, 6137766, 12359571, 24876504, 50054780, 100682624, 202531226, 407477585, 819858684, 1649639041, 3319062167 ]
[ "nonn" ]
A284520
[ 1, 2, 2, 2, 3, 4, 4, 4, 4, 5, 6, 7, 8, 8, 8, 8, 8, 8, 9, 10, 11, 12, 13, 14, 15, 15, 15, 15, 16, 16, 16, 16, 16, 16, 16, 17, 18, 19, 19, 19, 19, 20, 22, 25, 28, 28, 26, 24, 23, 25, 29, 30, 31, 30, 30, 30, ...
[ "nonn", "look" ]
A178663
[ 1, 4, 6, 7, 8, 11, 12, 13, 17, 19, 20, 23, 24, 29, 31, 37, 38, 41, 42, 43, 47, 53, 54, 59, 61, 67, 71, 73, 74, 79, 80, 83, 89, 97, 101, 103, 104, 107, 109, 113, 114, 127, 128, 131, 137, 139, 140, 149, 151, 157, 163, ...
[ "nonn" ]
A369883
[ 3, 6, 1, 3, 2, 8, 6, 1, 6, 8, 8, 8, 2, 2, 2, 5, 8, 4, 6, 9, 7, 1, 6, 1, 6, 5, 7, 6, 7, 8, 7, 3, 9, 9, 3, 8, 9, 5, 4, 5, 9, 0, 6, 4, 1, 5, 4, 7, 3, 0, 2, 3, 9, 6, 1, 7, 1, 3, 7, 7, 2, 3, 4, 5...
[ "nonn", "cons" ]
A229160
[ 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 5, 5, 2, 0, 0, 21, 21, 11, 3, 0, 0, 84, 84, 49, 19, 4, 0, 0, 330, 330, 204, 92, 29, 5, 0, 0, 1287, 1287, 825, 405, 153, 41, 6, 0, 0, 5005, 5005, 3289, 1705, 715, 235, 55, 7, 0, 0...
[ "nonn", "tabl" ]
A004486
[ 5, 3, 4, 0, 6, 8, 10, 1, 2, 7, 12, 14, 9, 15, 17, 13, 18, 11, 16, 21, 23, 19, 24, 26, 22, 27, 20, 25, 30, 32, 28, 33, 35, 31, 36, 29, 34, 39, 41, 37, 42, 44, 40, 45, 47, 38, 48, 50, 46, 51, 43, 49, 54, 56, 52...
[ "nonn", "easy" ]
A165939
[ 1, 23, 506, 11132, 244904, 5387888, 118533536, 2607737792, 57370231424, 1262145091328, 27767192008963, 610878224191620, 13439320932093440, 295665060503367300, 6504631331014937000, 143101889281027440000 ]
[ "nonn" ]
A093196
[ 1, 28, 265, 1392, 5145, 15100, 37681, 83392, 168273, 315580, 557689, 938224, 1514409, 2359644, 3566305, 5248768, 7546657, 10628316, 14694505, 19982320, 26769337, 35377980, 46180113, 59601856, 76128625, 96310396, 120767193 ]
[ "nonn", "easy" ]
A366405
[ 1, 2, -3, 22, -138, 1012, -7839, 63506, -531024, 4549276, -39723484, 352237844, -3163252976, 28711196184, -262964888021, 2427319896584, -22557930343459, 210889624536396, -1981972609174109, 18714482015314016, -177453862702084000, 1689045253793240000 ]
[ "sign" ]
A315028
[ 1, 5, 9, 15, 19, 24, 31, 34, 37, 45, 50, 52, 59, 64, 66, 74, 81, 81, 86, 95, 97, 102, 109, 110, 116, 124, 128, 131, 135, 142, 147, 152, 156, 159, 166, 171, 178, 181, 181, 192, 197, 199, 206, 208, 213, 221, 228, 228, 230,...
[ "nonn" ]
A135922
[ 1, 1, 2, 6, 26, 158, 1330, 15414, 245578, 5382862, 162700898, 6801417318, 394502066810, 31849226170622, 3589334331706258, 566102993389615200, 125225331231990000000, 3.892065575354511e+22, 1.7021548688670113e+25, 1.0486973328106498e+28 ]
[ "nonn" ]
A358363
[ 1, 12, 196, 3120, 50020, 799536, 12799632, 204724416, 3276326820, 52413049520, 838703348496, 13418125153472, 214703825630736, 3435088134123200, 54963617747611200, 879389273444524800, 14070604335190694000, 225124668703739770000, 3.602061930346133e+21 ]
[ "nonn" ]
A322156
[ 1, 1, 1, 2, 2, 1, 2, 1, 1, 2, 2, 3, 3, 1, 3, 1, 1, 3, 2, 3, 2, 1, 3, 3, 4, 4, 1, 4, 1, 1, 4, 2, 4, 2, 1, 4, 2, 1, 1, 4, 2, 2, 4, 3, 4, 3, 1, 4, 4, 5, 5, 1, 5, 1, 1, 5, 2, 5, 2, 1, 5, 2, 1, 1...
[ "nonn", "easy" ]
A263136
[ 1, 0, 0, 1, 0, 0, 1, 2, 0, 1, 2, 3, 1, 2, 6, 5, 2, 6, 11, 7, 6, 15, 21, 12, 15, 30, 34, 22, 35, 58, 59, 43, 70, 108, 95, 85, 142, 187, 161, 167, 263, 318, 274, 318, 480, 534, 471, 595, 836, 879, 819, 1081, 1433, ...
[ "nonn" ]