id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A221433
[ 6, 12, 12, 576, 66240, 15321600, 5411750400, 2834466324480, 2102110586634240, 2130686007341875200, 2.86693408772164e+21, 4.9985127046991e+24, 1.1064050379110707e+28, 3.0552674703715742e+31 ]
[ "nonn" ]
A240198
[ 0, 4, 6, 13, 84, 181, 989, 2521, 11254, 35113, 35113 ]
[ "nonn" ]
A286866
[ 1, 2, 4, 8, 24, 48, 96, 192, 480, 960, 1920, 3840, 7680, 15360, 30720, 61440, 130560, 261120, 522240, 1044480, 2088960, 4177920, 8355840, 16711680, 33423360, 66846720, 133693440, 267386880, 534773760, 1069547520, 2139095040, 4278190080, 8589803520 ]
[ "nonn", "easy" ]
A369521
[ 2526, 44405, 209674, 220209, 234622, 328877, 375823, 409737, 428947, 473673, 540026, 569427, 611174, 736077, 748673, 758423, 781747, 800022, 863722, 889251, 914878, 927622, 973927, 982398, 988478, 994061, 1003474, 1021602, 1072477, 1088877, 1150077, 1157...
[ "nonn" ]
A032745
[ 4602, 5517, 7539, 12955, 14555, 20137, 20379, 26629, 32767, 35689, 35825, 37706, 46020, 46715, 51988, 55170, 66344, 73338, 73974, 75390, 76157, 86025, 91497, 105852, 114488, 129550, 132234, 145550, 146399, 158651, 160897, 171673, 174782, 176988, 18...
[ "nonn", "base" ]
A137796
[ 17, 19, 29, 31, 41, 59, 71, 101, 139, 151, 179, 211, 239, 251, 269, 281, 409, 421, 431, 479, 491, 619, 631, 739, 809, 941, 1009, 1021, 1051, 1289, 1291, 1439, 1459, 1471, 1499, 1511, 1571, 1609, 1709, 1721, 1789, 1889, 1901, 1999,...
[ "nonn" ]
A381951
[ 27, 125, 135, 189, 243, 297, 343, 351, 375, 459, 513, 621, 675, 783, 837, 875, 945, 999, 1029, 1107, 1125, 1161, 1215, 1269, 1323, 1331, 1375, 1431, 1485, 1593, 1625, 1647, 1701, 1715, 1755, 1809, 1917, 1971, 2079, 2125, 2133, 2187, ...
[ "nonn", "easy" ]
A349131
[ 1, 2, 4, 4, 8, 8, 12, 8, 14, 16, 20, 16, 24, 24, 32, 16, 32, 28, 36, 32, 48, 40, 44, 32, 52, 48, 46, 48, 56, 64, 60, 32, 80, 64, 96, 56, 72, 72, 96, 64, 80, 96, 84, 80, 112, 88, 92, 64, 114, 104, 128, 96, 104, ...
[ "nonn", "mult" ]
A075533
[ 1, 2, 0, 12, 0, 0, 840, 0, 0, 50400, 831600, 0, 0, 302702400, 1135134000, 14529715200, 0, 2315673360000, 15545887156800, 140792940288000, 443497761907200, 28006062372288000, 623360743125120000 ]
[ "nonn" ]
A336773
[ 7, 13, 37, 73, 97, 193, 577, 769, 3457, 10369, 0, 12289, 629857, 839809, 147457, 995329, 1990657, 786433, 5308417, 120932353, 14155777, 28311553, 0, 113246209, 29386561537, 3439853569, 6879707137, 1811939329, 18345885697, 3221225473, 1253826625537, 0, ...
[ "nonn" ]
A089014
[ 0, 1, 2, -1, 18, 35, 38, 65, 190, 159, 120, -17, 310, 919, 242, 665, 360, 521, 614, 1751, 578, 651, 616, 2197, 3234, 1007, 1592, -39, 1720, 6583, 3190, 3985, 2570, 1161, 3334, 2065, 4846, -5, 1580, 3827, 2172, -55, 4100, 3077, 1...
[ "sign" ]
A288718
[ 2, 3, 5, 7, 37, 67, 313, 751, 2857, 129169, 576577, 17873857, 54286849, 393750001, 643458817, 19053977918977, 206180145819649, 1.1716249122484565e+28, 1.7763655589329137e+29, 4.905572437981868e+34 ]
[ "nonn" ]
A058079
[ 5, 7, 19, 23, 43, 73, 79, 107, 149, 151, 167, 173, 197, 199, 211, 271, 293, 313, 349, 367, 389, 409, 433, 439, 457, 467, 503, 509, 593, 619, 643, 647, 683, 773, 821, 823, 827, 863, 883, 887, 997, 1019, 1051, 1069, 1217, 1223 ]
[ "nonn" ]
A316482
[ 21025, 23104, 32041, 36100, 63001, 10125124, 10176100, 10233601, 10530025, 10824100, 11122225, 11303044, 11424400, 12040900, 12103441, 12222016, 12602500, 13315201, 13322500, 14055001, 14600041, 16008001, 16080100, 16810000, 20205025, 20214016, 20611600 ]
[ "nonn", "base" ]
A204401
[ 4293, 47883, 719125, 6579664, 70193731, 852798050, 8916413698, 96129489898, 1088258363670, 11799987759443, 128424052872957, 1421756480602128, 15554915760569672, 170073781922617340, 1870112186157878500 ]
[ "nonn" ]
A124373
[ 1, 1, 2, 6, 25, 135, 909, 7417, 71698, 806968, 10427825, 152915697, 2519879761, 46276398129, 940296067422, 21007099850230, 513172107841525, 13640345170943528, 392780078386164400, 12204609567437300000, 407757149671568240000, 1.4600807659376774e+22 ]
[ "nonn" ]
A101550
[ 5, 7, 11, 13, 17, 19, 22, 23, 26, 29, 31, 34, 37, 38, 39, 41, 43, 46, 47, 51, 53, 57, 58, 59, 61, 62, 67, 68, 69, 71, 73, 74, 76, 79, 82, 83, 86, 87, 89, 92, 93, 94, 97, 101, 103, 106, 107, 109, 111, 113, 115, 116,...
[ "nonn" ]
A353227
[ 1, 0, 0, 0, 24, 0, 0, 2520, 20160, 0, 1209600, 19958400, 79833600, 1556755200, 39956716800, 326918592000, 5056340889600, 148203095040000, 1867358997504000, 30411275102208000, 946128558735360000, 15965919428659200000, 293266062902292480000 ]
[ "nonn" ]
A218804
[ 3, 15, 57, 225, 895, 3551, 14089, 55905, 221827, 880191, 3492529, 13858081, 54987775, 218187167, 865749521, 3435226017, 13630706691, 54085572239, 214607297385, 851544879425, 3378863116543, 13407063134527, 53198172193817 ]
[ "nonn" ]
A128500
[ 1, 1, 1, 3, 11, 11, 97, 159, 159, 187, 1777, 1777, 26181, 23321, 23321, 51647, 797919, 797919, 16521821, 15228529, 15228529, 16404249, 351431887, 351431887, 1876142299, 1761735699, 1761735699, 1867970399, 51196569971, 51196569971 ]
[ "nonn", "frac", "easy" ]
A209077
[ 1, 2, 149, 580717, 58407763266, 134528361351329460, 7.015812452562871e+24, 8.235314565328229e+33, 2.1674079723612076e+44, 1.275575534238461e+56 ]
[ "nonn" ]
A146885
[ 8, 64, 456, 3200, 22408, 156864, 1098056, 7686400, 53804808, 376633664, 2636435656, 18455049600, 129185347208, 904297430464, 6330082013256, 44310574092800, 310174018649608, 2171218130547264, 15198526913830856 ]
[ "nonn", "easy", "less" ]
A227958
[ 7, 0, 2, 1, 8, 8, 5, 0, 1, 3, 2, 6, 5, 5, 9, 5, 9, 6, 2, 3, 8, 1, 8, 7, 4, 7, 9, 7, 4, 6, 2, 1, 8, 0, 6, 3, 5, 0, 4, 5, 3, 0, 5, 1, 7, 0, 3, 8, 9, 6, 2, 0, 7, 6, 6, 6, 2, 8, 9, 4, 3, 2, 8, 6...
[ "cons", "nonn" ]
A034056
[ 9, 19, 33, 91, 119, 133, 191, 313, 331, 911, 1119, 1133, 1191, 1313, 1331, 1911, 3113, 3131, 3311, 9111, 11119, 11133, 11191, 11313, 11331, 11911, 13113, 13131, 13311, 19111, 31113, 31131, 31311, 33111, 91111, 111119, 111133, 111191, 111313...
[ "nonn", "base", "easy" ]
A137937
[ 0, 0, 3, 4, 5, 6, 7, 8, 9, 10, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 8...
[ "nonn", "fini", "full" ]
A201000
[ 3, 11, 139, 1181629920803, 8.540818106557988e+31 ]
[ "nonn" ]
A303006
[ 2, 4, 5, 36, 27, 25, 114, 196, 437, 729, 1674, 3249, 6450, 12996, 24870, 49284, 95882, 190969, 369666, 724201, 1425261, 2802276, 5495162, 10764961, 21186827, 41602500, 81686669, 160326244, 314946266, 618516900, 1214288106, 2384368900, 4681737021, 919...
[ "nonn", "easy" ]
A233433
[ 97, 1867, 5647, 15727, 43777, 79687, 257857, 1830337, 3995437, 5732137, 9127627, 9933607, 16915267, 23317747, 32582437, 38028577 ]
[ "nonn" ]
A114198
[ 1, 2, 7, 31, 142, 659, 3113, 14918, 72199, 351983, 1726022, 8504509, 42070429, 208812722, 1039387519, 5186451311, 25935769702, 129942777227, 652133298421, 3277734587302, 16496741964221, 83129076840317, 419362231888882 ]
[ "easy", "nonn" ]
A281581
[ 1, 4, 21, 127, 807, 5179, 33111, 210067, 1321887, 8255899, 51225351, 316067107, 1941032367, 11873549419, 72394874391, 440204293747, 2670669533247, 16172309991739, 97779619272231, 590423692897987, 3561340764760527, 21462312506478860 ]
[ "nonn", "easy" ]
A254643
[ 1, 515, 21225, 324275, 2862790, 17714466, 85232910, 339635850, 1168343775, 3571356685, 9906622271, 25333920885, 60457751900, 135939162100, 290221510860, 592024274916, 1159935330765, 2192313968775, 4011847886725, 7130537084615 ]
[ "nonn", "easy" ]
A238478
[ 1, 2, 2, 4, 5, 8, 11, 17, 22, 32, 43, 59, 78, 105, 136, 181, 233, 302, 386, 496, 626, 796, 999, 1255, 1564, 1951, 2412, 2988, 3674, 4516, 5524, 6753, 8211, 9984, 12086, 14617, 17617, 21211, 25450, 30514, 36475, 43550, 51869, 61707...
[ "nonn", "easy" ]
A374398
[ 0, 0, 1, 0, 1, 0, 1, 2, 0, 1, 0, 1, 2, 3, 4, 0, 1, 2, 0, 1, 2, 3, 4, 5, 6, 0, 1, 0, 1, 2, 0, 1, 2, 3, 4, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 0, 1, 2, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 0,...
[ "nonn", "tabf" ]
A336611
[ 10, 100, 101, 1011, 1001, 1320, 1302, 10210, 10201, 13002, 13042, 102013, 102031, 130024, 130042, 135204, 135024, 1024013, 1035024, 1305204, 1305024, 1350024, 1350624, 10240513, 10350624, 13050024, 13050624, 13500264, 13500624, 13572046, 13570246, 103572...
[ "base", "nonn" ]
A253550
[ 1, 3, 5, 6, 7, 10, 11, 12, 15, 14, 13, 20, 17, 22, 21, 24, 19, 30, 23, 28, 33, 26, 29, 40, 35, 34, 45, 44, 31, 42, 37, 48, 39, 38, 55, 60, 41, 46, 51, 56, 43, 66, 47, 52, 63, 58, 53, 80, 77, 70, 57, 68, 59, 90,...
[ "nonn" ]
A104807
[ 3, 5, 2, 4, 3, 5, 3, 2, 6, 2, 5, 4, 1, 6, 7, 2, 10, 5, 5, 4, 4, 5, 2, 4, 6, 2, 6, 5, 7, 1, 5, 2, 3, 4, 3, 7, 2, 2, 1, 7, 5, 7, 1, 3, 1, 4, 3, 4, 3, 3, 6, 3, 7, 4, 2, 5, 4, 4, 4, 7, 4, 3, 5, ...
[ "nonn", "base" ]
A307885
[ 1, 0, -3, 28, -255, 2376, -20195, 71688, 3834369, -187855280, 6676401501, -220595216280, 7180102389889, -234023553073296, 7631745228481725, -245429882267144640, 7501602903392006000, -196609711096827800000, 2.5424350025015314e+21 ]
[ "sign" ]
A286708
[ 36, 72, 100, 108, 144, 196, 200, 216, 225, 288, 324, 392, 400, 432, 441, 484, 500, 576, 648, 675, 676, 784, 800, 864, 900, 968, 972, 1000, 1089, 1125, 1152, 1156, 1225, 1296, 1323, 1352, 1372, 1444, 1521, 1568, 1600, 1728, 1764, 1...
[ "nonn" ]
A328953
[ 4, 9, 16, 25, 36, 50, 64, 81, 100, 117, 121, 144, 180, 196, 200, 225, 242, 256, 289, 324, 325, 400, 441, 450, 468, 484, 529, 576, 578, 625, 650, 676, 729, 784, 800, 841, 900, 968, 1024, 1058, 1089, 1156, 1225, 1280, 1296, 1300...
[ "nonn" ]
A194637
[ 0, 1, 2, 4, 5, 6, 11, 18, 20, 28, 70, 106, 150, 726, 2906, 7431, 14073, 22394, 41422, 82587, 85461, 356981 ]
[ "more", "nonn" ]
A096778
[ 1, 1, 2, 3, 5, 7, 10, 14, 19, 26, 34, 45, 58, 75, 95, 121, 151, 189, 234, 289, 354, 433, 526, 637, 768, 923, 1105, 1319, 1569, 1861, 2202, 2597, 3056, 3587, 4201, 4908, 5723, 6658, 7732, 8961, 10367, 11971, 13802, 15884, 18253, ...
[ "easy", "nonn" ]
A025090
[ 2, 3, 14, 22, 52, 74, 149, 199, 360, 436, 764, 922, 1567, 1815, 3022, 3540, 5834, 6724, 10999, 12157, 19804, 22204, 36080, 39262, 63703, 68697, 111344, 121702, 197120, 215424, 348789, 375335 ]
[ "dead" ]
A153560
[ 1, 2, 8, 64, 848, 22202, 1109397, 104534239, 18430578601, 6145119518391, 3869729452665295, 4596597483881683000, 1.02967422219182e+22 ]
[ "nonn" ]
A203662
[ 864, 1944, 3888, 4000, 5400, 6912, 9000, 10584, 10800, 10976, 17496, 18000, 21168, 21600, 24696, 25000, 26136, 30375, 31104, 32000, 34992, 36000, 36504, 42336, 42592, 43200, 48600, 49000, 49392, 50000, 52272, 55296, 62208, 62424, 68600, 69984 ]
[ "nonn" ]
A272133
[ -555731, 1, 29525, 1657129, 16591741, 80872529, 269614501, 711754105, 1604794829, 3229552801, 5964902389, 10302521801, 16861638685, 26403775729, 39847496261, 58283149849, 82987617901, 115439059265, 157331655829, 210590358121, 277385630909, 360148198801 ]
[ "sign", "easy" ]
A297811
[ 0, 8, 0, 13, 24, 41, 39, 109, 216, 471, 883, 1826, 3771, 7957, 16180, 33265, 68409, 141908, 292327, 602447, 1240608, 2561035, 5282041, 10893334, 22455433, 46313241, 95513864, 196987195, 406204281, 837692722, 1727540167, 3562722575, 7347181938 ]
[ "nonn" ]
A009478
[ 0, 2, -8, 72, -1024, 18720, -451200, 13870976, -517341184, 22907884032, -1190546278400, 71557772290048, -4904509780131840, 379465209995010050, -32882543112668740000, 3.1678527727820797e+21, -3.369821885004016e+23 ]
[ "sign" ]
A110004
[ 1, 1, 1, 1, 2, 8, 16, 4, 3, 27, 81, 9, 4, 64, 256, 16, 5, 125, 625, 25, 6, 216, 1296, 36, 7, 343, 2401, 49, 8, 512, 4096, 64, 9, 729, 6561, 81, 10, 1000, 10000, 100, 11, 1331, 14641, 121, 12, 1728, 20736, 144, 13, 2197...
[ "nonn" ]
A386119
[ 5, 11, 41, 61, 151, 461, 541, 641, 661, 1151, 1451, 1511, 4111, 4441, 4451, 4561, 4651, 5441, 5641, 5651, 6151, 6451, 6551, 6661, 11161, 11411, 11551, 14411, 14461, 14551, 14561, 15161, 15451, 15461, 15511, 15541, 15551, 15641, 15661, 161...
[ "nonn", "base", "easy" ]
A179550
[ 13, 127, 457, 1429, 1553, 1621, 2273, 2341, 2837, 4129, 4231, 4561, 4813, 5119, 5519, 5531, 6121, 6451, 6547, 8161, 8167, 8219, 8237, 8783, 8819, 8831, 8941, 9511, 10267, 10559, 11299, 11383, 12809, 13183, 15091, 15569, 16573, 17569, 17659,...
[ "nonn", "base" ]
A325717
[ 0, 0, 0, 0, 0, 1, 2, 5, 9, 14, 23, 34, 49, 68, 97, 129, 175, 228, 303, 392, 507, 645, 826, 1038, 1314, 1641, 2050, 2542, 3152, 3877, 4776, 5844, 7142, 8695, 10572, 12797, 15482, 18663, 22459, 26959, 32314, 38623, 46112, 54923, 6...
[ "nonn", "easy" ]
A302119
[ 1, 1, 1, 1, 4, 6, 16, 20, 44, 59, 122, 169, 321, 456, 825, 1201, 2091, 3100, 5246, 7893, 13083, 19907, 32497, 49869, 80510, 124335, 199124, 308956, 491945, 765898, 1214494, 1895490, 2996873, 4685587, 7392756, 11573134, 18232908, 28568658, 4...
[ "nonn", "easy" ]
A165723
[ 0, 0, 3, 5, 0, 6, 4, 2, 1, 0, 0, 3, 6, 1, 6, 2, 8, 5, 2, 0, 7, 5, 3, 1, 0, 8, 7, 5, 4, 3, 2, 1, 0, 9, 8, 7, 7, 6, 5, 5, 4, 3, 3, 2, 2, 1, 1, 0, 0, 0, 9, 9, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 5, 5...
[ "nonn", "base", "easy" ]
A096818
[ 4, 5, 9, 13, 17, 57, 105, 137, 3217, 3229, 4233, 6097, 8757, 11457, 12073, 15425, 40117, 45357, 334809, 1509037 ]
[ "nonn", "more" ]
A057052
[ 1, 2, 6, 9, 5, 6, 18, 16, 26, 10, 5, 17, 52, 43, 54, 1, 62, 54, 73, 125, 81, 63, 77, 129, 49, 185, 180, 7, 79, 204, 145, 128, 159, 244, 97, 296, 250, 257, 323, 97, 286, 168, 106, 106, 174, 316, 83, 377, 279, 250, 296...
[ "nonn" ]
A236189
[ 4, 6, 2, 6, 4, 2, 4, 6, 6, 2, 6, 4, 2, 6, 4, 6, 8, 4, 2, 4, 2, 4, 14, 4, 6, 2, 10, 2, 6, 6, 4, 6, 6, 2, 10, 2, 4, 2, 12, 12, 4, 2, 4, 6, 2, 10, 6, 6, 6, 2, 6, 4, 2, 10, 14, 4, 2, 4, 14, 6, 10, 2...
[ "nonn" ]
A051850
[ 1, 1, 2, 1, 2, 3, 7, 1, 2, 3, 4, 8, 9, 14, 39, 1, 2, 3, 4, 5, 9, 10, 11, 16, 17, 23, 52, 53, 59, 95, 311, 1, 2, 3, 4, 5, 6, 10, 11, 12, 13, 18, 19, 20, 26, 27, 34, 67, 68, 69, 75, 76, 83, 124, 125, 132, 1...
[ "easy", "nonn", "tabf" ]
A105866
[ 0, 1, 1, 6, 9, 33, 62, 185, 393, 1062, 2409, 6193, 14542, 36441, 87129, 215478, 520073, 1277441, 3098334, 7583481, 18439977, 45050950, 109690537, 267731409, 652322286, 1591394457, 3878780921, 9460182998, 23062009545, 56239784865 ]
[ "easy", "nonn" ]
A084458
[ 4, 4, 6, 0, 5, 8, 0, 0, 3, 7, 0, 7, 0, 9, 0, 0, 7, 0, 10, 0, 0, 0, 7, 12, 0, 0, 0, 0, 4, 10, 0, 0, 9, 0, 0, 11, 0, 0, 0, 9, 0, 13, 0, 0, 0, 0, 9, 0, 14, 0, 0, 0, 0, 0, 5, 12, 0, 0, 0, 11, 0, 0, ...
[ "nonn" ]
A369682
[ 1, 4, 12, 38, 112, 332, 972, 2818, 8098, 23096, 65418, 184194, 516080, 1440334, 4008442, 11135682, 30912896, 85835538, 238601354, 664447912, 1854592214, 5189848462, 14561237108, 40954656118, 115428662380, 325847049200, 920772219740, 2602948470362, 735699494409...
[ "nonn" ]
A282345
[ 11, 7, 11, 13, 11, 7, 11, 11, 7, 13, 11, 17, 11, 7, 11, 19, 11, 7, 13, 101, 11, 7, 487, 11, 7, 11, 73, 11, 7, 11, 11, 13, 7, 11, 11, 7, 29, 11, 17, 11, 7, 11, 11, 7, 11, 13, 19, 11, 7, 11, 137, 11, 7 ]
[ "nonn" ]
A290401
[ 3, 31, 47, 127, 137, 211, 271, 257, 397, 631, 661, 1039, 1879, 1471, 2203, 2707, 2179, 1321, 3169, 3319, 6247, 4507, 5569, 6871, 6481, 6121, 6271, 9521, 9421, 13441, 8677, 17029, 8539, 15349, 11971, 25171, 21139, 17851, 29761, 21031, 33...
[ "nonn" ]
A011419
[ 1, 2, 1, 6, 8, 8, 6, 9, 6, 7, 7, 8, 1, 2, 2, 4, 7, 3, 7, 9, 3, 8, 0, 0, 2, 9, 8, 8, 5, 0, 8, 3, 5, 0, 9, 6, 0, 1, 3, 2, 8, 9, 6, 1, 6, 5, 6, 5, 1, 6, 9, 1, 4, 5, 2, 8, 0, 7, 3, 4, 3, 5, 8, 3...
[ "nonn", "cons" ]
A001700
[ 1, 3, 10, 35, 126, 462, 1716, 6435, 24310, 92378, 352716, 1352078, 5200300, 20058300, 77558760, 300540195, 1166803110, 4537567650, 17672631900, 68923264410, 269128937220, 1052049481860, 4116715363800, 16123801841550, 63205303218876, 247959266474052 ]
[ "easy", "nonn", "nice", "core" ]
A304368
[ 199, 289, 298, 379, 388, 397, 469, 478, 487, 496, 559, 568, 577, 586, 595, 649, 658, 667, 676, 685, 694, 739, 748, 757, 766, 775, 784, 793, 829, 838, 847, 856, 865, 874, 883, 892, 919, 928, 937, 946, 955, 964, 973, 982, 991, 1...
[ "nonn", "base" ]
A185027
[ 1, 1, 4, 1, 1, 10, 1, 1, 4, 11, 1, 10, 1, 1, 19, 1, 1, 10, 1, 11, 25, 1, 1, 10, 1, 1, 4, 29, 1, 35, 1, 1, 4, 1, 1, 46, 1, 1, 4, 11, 1, 31, 1, 1, 64, 1, 1, 10, 1, 11, 4, 1, 1, 10, 56, 29, 4, 1, 1, 35...
[ "nonn", "easy" ]
A211319
[ 2, 26, 232, 1776, 12546 ]
[ "nonn", "tabf", "more" ]
A385171
[ 25, 59049, 78125, 13060694016, 17179869184, 19073486328125, 30514648531249, 53613724194557, 59120987373568, 65944160601201, 116490258898219, 324965351768751, 512908935546875, 21936950640377856, 371308922853718700, 578261433548013600, 913517247483641000 ]
[ "nonn", "base" ]
A337731
[ 18, 9, 6, 21, 9, 3, 3, 19, 2, 19, 18, 7, 9, 3, 3, 37, 9, 1, 6, 199, 1, 9, 9, 37, 199, 6, 1, 3, 9, 1663, 12, 937, 6, 1117, 1657, 1361, 3, 3, 3, 17497, 18, 1, 12, 10909, 1, 14563, 9, 18541, 17551, 199999, 3, 3, 18,...
[ "nonn", "base" ]
A328523
[ 0, 1, 1, 1, 2, 1, 1, 1, 1, 2, 2, 2, 2, 2, 1, 1, 2, 3, 3, 1, 1, 2, 1, 1, 1, 1, 2, 2, 2, 2, 3, 2, 2, 2, 2, 3, 2, 1, 1, 2, 3, 2, 2, 3, 2, 3, 3, 2, 2, 1, 3, 2, 1, 3, 1, 2, 2, 2, 2, 3, 2, 2, 4, 3...
[ "nonn" ]
A179631
[ 23, 229, 239, 283, 359, 563, 599, 683, 809, 829, 853, 883, 1181, 1217, 1787, 1811, 1847, 2069, 2411, 2693, 2939, 3329, 3583, 4547, 4871, 4877, 5059, 5099, 5171, 5683, 5693, 5717, 6203, 6269, 6353, 6829, 7487, 7541, 8629, 8747, 9239, 9...
[ "nonn", "base" ]
A320001
[ 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 2, 1, 2, 1, 1, 1, 1, 1, 1, 2, 1, 1, 2, 2, 1, 1, 2, 1, 1, 1, 1, 1, 1, 2, 2, 1, 2, 1, 1, 1, 2, 2, 1, 1, 1, 1, 2, 2, 1...
[ "nonn", "easy" ]
A314194
[ 1, 5, 11, 17, 21, 27, 33, 39, 43, 49, 55, 60, 65, 71, 77, 81, 87, 93, 99, 103, 109, 115, 120, 125, 131, 137, 141, 147, 153, 159, 163, 169, 175, 180, 185, 191, 197, 201, 207, 213, 219, 223, 229, 235, 240, 245, 251, 257, 2...
[ "nonn" ]
A001892
[ 1, 2, 5, 15, 49, 169, 602, 2191, 8095, 30239, 113906, 431886, 1646177, 6301715, 24210652, 93299841, 360490592, 1396030396, 5417028610, 21056764914, 81978913225, 319610939055, 1247641114021, 4875896455975, 19075294462185, 74696636715792, 292758662041150 ]
[ "nonn" ]
A012042
[ 1, 0, 4, -80, 4240, -342400, 41806400, -7093216000, 1601470624000, -464003651072000, 167847611351680000, -74143433704737280000, 3.9275771932443136e+22, -2.457576366211994e+25 ]
[ "sign" ]
A235370
[ 1, 1, 7, 79, 1393, 30721, 868567, 28504399, 1109848033, 48353443201, 2398980450727, 130283673056719, 7856035299112273, 510971549713342100, 36274422043921875000, 2.7485691465064246e+21, 2.2452110462823857e+23, 1.942064649730637e+25, 1.7941718610111244e+27 ]
[ "nonn" ]
A102857
[ 0, 1, 4, 5, 10, 11, 14, 15, 20, 21, 24, 25, 30, 31, 34, 35, 36, 39, 40, 45, 46, 49, 55, 56, 57, 59, 60, 61, 65, 66, 67, 70, 76, 77, 80, 84, 85, 86, 88, 89, 91, 92, 94, 95, 98, 101, 104, 105, 108, 111, 114, 119, 1...
[ "nonn" ]
A305388
[ 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0...
[ "nonn" ]
A206071
[ 112236, 3193722, 140136942, 6395526408, 295275611838, 13684187500638, 635039160433908, 29485215907903064, 1369276201021811000, 63592616489409670000, 2.953457871120193e+21, 1.3716905124541203e+23 ]
[ "nonn" ]
A199067
[ 1, 1, 9, 6, 0, 8, 2, 0, 3, 3, 2, 9, 7, 1, 3, 4, 8, 1, 9, 1, 4, 5, 6, 2, 1, 9, 5, 2, 9, 4, 1, 0, 4, 3, 2, 1, 1, 5, 9, 7, 2, 0, 4, 7, 1, 5, 9, 5, 9, 6, 8, 3, 8, 0, 5, 1, 0, 2, 3, 8, 0, 7, 4, 0...
[ "nonn", "cons" ]
A180003
[ 1, 2, 7, 13, 56, 247, 475, 2108, 9361, 18019, 80030, 355453, 684229, 3039014, 13497835, 25982665, 115402484, 512562259, 986657023, 4382255360, 19463867989, 37466984191, 166410301178, 739114421305, 1422758742217, 6319209189386 ]
[ "nonn" ]
A209391
[ 1, 2, 16, 152, 1449, 11655, 89469, 705803, 5771383, 45213223, 344221421, 2576621623, 19476715122, 147713174987, 1110131277687, 8315461638940, 62491630903612, 470960349189386, 3550021202822759, 26747955424745120 ]
[ "nonn" ]
A093918
[ 2, 8, 11, 27, 28, 58, 53, 101, 86, 156, 127, 223, 176, 302, 233, 393, 298, 496, 371, 611, 452, 738, 541, 877, 638, 1028, 743, 1191, 856, 1366, 977, 1553, 1106, 1752, 1243, 1963, 1388, 2186, 1541, 2421, 1702, 2668, 1871, 2927, 20...
[ "nonn", "easy" ]
A389882
[ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 22, 33, 44, 55, 66, 77, 88, 99, 110, 22, 33, 44, 55, 66, 77, 88, 99, 110, 121, 33, 44, 55, 66, 77, 88, 99, 110, 121, 132, 44, 55, 66, 77, 88, 99, 110, 121, 132, 143, 55, 66, 77, ...
[ "nonn", "base", "easy", "look" ]
A079315
[ 0, 1, 4, 4, 12, 4, 20, 12, 44, 4, 52, 12, 76, 12, 100, 36, 172, 4, 180, 12, 204, 12, 228, 36, 300, 12, 324, 36, 396, 36, 468, 108, 684, 4, 692, 12, 716, 12, 740, 36, 812, 12, 836, 36, 908, 36, 980, 108, 1196, 12, 122...
[ "nonn", "easy" ]
A356264
[ 0, 0, 1, 0, 1, 2, 0, 1, 5, 3, 2, 0, 1, 9, 12, 15, 10, 2, 0, 1, 14, 23, 12, 47, 94, 11, 31, 24, 2, 0, 1, 20, 38, 48, 113, 293, 154, 137, 183, 409, 78, 63, 54, 2, 0, 1, 27, 60, 87, 49, 227, 738, 883, 451, 457, ...
[ "nonn", "tabf" ]
A222043
[ 2, 2, 4, 2, 4, 7, 2, 4, 8, 12, 2, 4, 8, 14, 20, 2, 4, 8, 15, 24, 33, 2, 4, 8, 15, 27, 40, 53, 2, 4, 8, 15, 27, 46, 66, 85, 2, 4, 8, 15, 27, 47, 77, 108, 137, 2, 4, 8, 15, 27, 47, 79, 127, 176, 221, 2, 4, ...
[ "nonn", "tabl" ]
A249069
[ 0, 1, 1, 2, 3, 5, 1, 7, 9, 12, 2, 13, 3, 16, 5, 6, 18, 1, 19, 2, 21, 3, 25, 27, 30, 32, 35, 38, 40, 41, 43, 45, 48, 13, 14, 15, 16, 18, 6, 53, 20, 7, 57, 21, 8, 64, 24, 65, 27, 69, 28, 72, 10, 73, 11, 76, ...
[ "nonn", "base" ]
A293197
[ 1, 1, 3, 13, 73, 501, 4050, 37632, 394296, 4595976, 58932720, 823949280, 12467513520, 202933851120, 3534322952160, 65559527953920, 1290129736896000, 26840074522060800, 588476031700677100, 13560642403296470000, 327603687047488100000, 8.278733693718655e+21 ]
[ "nonn" ]
A375482
[ 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 1, 0, 1, 1, 0, 1, 1, 1, 0, 0, 1, 0, 0, 2, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 1, 1, 2, 1, 1, 2, 2, 1, 0, 0, 2, 1, 1...
[ "nonn" ]
A028413
[ 0, 1, 2, 10, 18, 27, 100, 125, 173, 1000, 1120, 1184, 1355, 1836, 1876, 1961, 10000, 11915, 100000, 119084, 126935, 187876, 188348, 192383, 196813, 1000000, 1010200, 1190915, 1228425, 1780728, 1821636, 1975356, 10000000, 11842184, 12643549, 12783...
[ "nonn", "base" ]
A286321
[ 1, 1, 1, 2, 1, 4, 2, 1, 3, 4, 2, 6, 1, 3, 6, 4, 4, 2, 6, 5, 1, 8, 3, 9, 10, 4, 12, 4, 2, 15, 6, 9, 5, 1, 10, 8, 3, 6, 9, 20, 10, 4, 7, 12, 4, 12, 2, 8, 15, 6, 14, 16, 5, 18, 1, 16, 20, 8, 18, 3, 6...
[ "nonn", "look" ]
A304267
[ 8, 7, 19, 50, 146, 404, 1074, 2990, 8316, 22660, 62314, 172244, 473150, 1300260, 3582364, 9857308, 27108012, 74607826, 205320218, 564864078, 1554286696, 4277060278, 11768341874, 32381151240, 89101629960, 245170898378 ]
[ "nonn" ]
A054240
[ 0, 1, 1, 2, 4, 2, 3, 3, 3, 3, 4, 6, 8, 6, 4, 5, 5, 9, 9, 5, 5, 6, 16, 6, 12, 6, 16, 6, 7, 7, 7, 7, 7, 7, 7, 7, 8, 18, 12, 18, 16, 18, 12, 18, 8, 9, 9, 13, 13, 17, 17, 13, 13, 9, 9, 10, 12, 10, 24, 1...
[ "nonn", "base", "tabl", "easy", "look" ]
A007198
[ 1, 3, 12, 52, 238, 1125, 5438, 26715, 132871, 667312, 3377906, 17210522, 88169685, 453810095, 2345209383, 12162367228, 63270384303 ]
[ "nonn", "more" ]
A172352
[ 1, 1, 1, 1, 1, 1, 1, 8, 8, 1, 1, 15, 120, 15, 1, 1, 71, 1065, 1065, 71, 1, 1, 176, 12496, 23430, 12496, 176, 1, 1, 673, 118448, 1051226, 1051226, 118448, 673, 1, 1, 1905, 1282065, 28205430, 133505702, 28205430, 1282065, 1905, 1,...
[ "nonn", "tabl" ]
A069660
[ 6, 8, 120, 72, 5040, 1152, 362880, 28800, 39916800, 1036800, 6227020800, 50803200, 1307674368000, 3251404800, 355687428096000, 263363788800, 121645100408832000, 26336378880000, 51090942171709440000, 3186701844480000, 2.585201673888498e+22, 458885065605120000 ]
[ "nonn", "easy" ]
A005623
[ 1, 3, 5, 6, 8, 17, 25, 34, 67, 103, 134, 265, 405, 616, 1031, 1565, 2568, 4205, 6603, 11000, 18069, 28975, 46730, 74855, 120469, 197412, 317819, 516103, 830538, 1343773, 2177369, 3527314, 5699815, 9228387, 14926778 ]
[ "nonn" ]
A173135
[ 2, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 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, 229, 233, ...
[ "nonn", "easy", "less" ]
A258533
[ 65548, 342157, 1455282, 6505920, 27337100, 112691334, 455126938, 1772033766, 6734845200, 25249454288, 95219674164, 358817876108, 1348386258986, 5051397246442, 19013904134224, 72034257666458, 275203998778230 ]
[ "nonn" ]