id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A209680
[ 1, 15, 1508, 6716352, 66825091608, 16894558898454012, 7.697358649459141e+21, 8.76776681530766e+28, 1.7976661803789754e+36, 9.21444360078431e+44 ]
[ "nonn" ]
A160342
[ 199, 223, 2333, 44449, 555557, 0, 77767777, 888888883, 9199999999 ]
[ "fini", "full", "nonn", "base" ]
A165613
[ 29, 181, 379, 991, 2857, 10711, 30097, 32941, 37441, 39799, 58321, 66301, 69427, 94543, 122149, 135049, 157999, 167683, 187921, 209299, 214831, 326611, 352237, 503383, 897751, 955501, 1105651, 1195741, 1248799, 1516591, 1631989, 1699111 ]
[ "nonn" ]
A301748
[ 5, 12, 25, 51, 81, 155, 221, 376, 445, 782, 953, 1457, 1697, 2501, 2467, 4030, 4501, 6176, 6821, 9087, 9025, 12927, 13989, 17876, 19181, 24130, 21481, 31901, 33857, 41417, 43793, 52922, 52957, 66676, 69997, 82955, 86801, 102051, 97735, 12...
[ "nonn" ]
A139963
[ 2, 233, 239, 263, 281, 359, 431, 569, 743, 809, 953, 1031, 1289, 1481, 1583, 1913, 2081, 2087, 2111, 2129, 2153, 2207, 2417, 2543, 2591, 2657, 2801, 2879, 2969, 3119, 3137, 3329, 3593, 3761, 3929, 4001, 4127, 4391, 4463, 4649, 4817, 4...
[ "nonn", "easy" ]
A170838
[ 2, 5, 9, 11, 11, 24, 36, 29, 11, 24, 38, 44, 57, 108, 135, 83, 11, 24, 38, 44, 57, 108, 137, 98, 57, 110, 158, 189, 279, 459, 486, 245, 11, 24, 38, 44, 57, 108, 137, 98, 57, 110, 158, 189, 279, 459, 488, 260, 57, 110, ...
[ "nonn" ]
A262019
[ 15, 3575, 637215, 113421575, 20188404015, 3593422493975, 639609015524415, 113846811340852770, 20264092809656270000, 3.6068946733074754e+21, 6.420069877559209e+23, 1.1427363692588062e+26, 2.0340065365818994e+28, 3.620417361478855e+30 ]
[ "nonn", "easy", "changed" ]
A077555
[ 4, 24, 216, 2160, 32400, 810000, 9525600, 238140000, 8334900000, 408410100000, 6051137400000, 296505732600000, 16307815293000000, 1255701777561000000, 151939915084881000000, 1.07484810596163e+21, 8.27633041590455e+22 ]
[ "nonn" ]
A108124
[ 0, 1, -2, 6, -20, 80, -366, 1904, -11080, 71424, -505210, 3891712, -32433180, 290787328, -2791053734, 28556359680, -310264194320, 3567710830592, -43287834157938, 552688817143808, -7407423764750500, 103981459115606020, -1525675236649033700, 23354749389657604000 ]
[ "sign" ]
A059908
[ 0, 1, 2, 4, 3, 2, 8, 2, 12, 5, 12, 2, 12, 2, 4, 20, 5, 6, 10, 2, 6, 14, 12, 2, 40, 9, 4, 6, 18, 10, 16, 6, 6, 8, 12, 12, 39, 2, 12, 8, 8, 6, 16, 6, 18, 26, 12, 6, 50, 3, 18, 8, 18, 2, 32, 12, 8, 20, 4...
[ "easy", "nonn" ]
A036039
[ 1, 1, 1, 2, 3, 1, 6, 8, 3, 6, 1, 24, 30, 20, 20, 15, 10, 1, 120, 144, 90, 40, 90, 120, 15, 40, 45, 15, 1, 720, 840, 504, 420, 504, 630, 280, 210, 210, 420, 105, 70, 105, 21, 1, 5040, 5760, 3360, 2688, 1260, 3360, 403...
[ "nonn", "easy", "nice", "tabf", "look", "hear" ]
A338431
[ 1, 1, 1, 3, 3, 4, 6, 10, 8, 13, 15, 15, 21, 26, 21, 36, 36, 33, 45, 49, 42, 64, 66, 58, 72, 89, 71, 99, 105, 80, 120, 136, 105, 151, 137, 129, 171, 188, 147, 190, 210, 165, 231, 247, 184, 274, 276, 228, 288, 295 ]
[ "nonn", "easy" ]
A197764
[ 5, 73, 1877, 69730, 3363233, 199205127, 13982257729, 1134344816185, 104416147080712, 10750872867074588, 1224163955433851000, 152733676280699550000, 2.07199695539167e+22, 3.036565789908882e+24, 4.780826453341195e+26, 8.047521094935629e+28 ]
[ "nonn", "less" ]
A362908
[ 0, 0, 0, 1, 4, 17, 72, 323, 1639, 9203 ]
[ "nonn", "more" ]
A098560
[ 1, 8, 64, 768, 12288, 245760, 5898240, 165150720, 5284823040, 190253629440, 7610145177600, 334846387814400, 16072626615091200, 835776583984742400, 46803488703145574000, 2.8082093221887345e+21, 1.79725396620079e+23 ]
[ "easy", "nonn" ]
A094802
[ 1, 2, 3, 4, 5, 5, 7, 7, 7, 7, 11, 11, 13, 13, 13, 13, 17, 17, 19, 19, 19, 19, 23, 23, 23, 23, 23, 23, 29, 29, 31, 31, 31, 31, 31, 31, 37, 37, 37, 37, 41, 41, 43, 43, 43, 43, 47, 47, 47, 47, 47, 47, 53, 53, 53...
[ "nonn" ]
A209731
[ 696, 9712, 137888, 1995752, 28927984, 420545824, 6111765608, 88883321584, 1292321119496, 18793764804064, 273281958853584, 3974120752445352, 57789976679148950, 840380963807821700, 12220602110589975000 ]
[ "nonn" ]
A337932
[ 0, 1, 1, 2, 2, 3, 2, 3, 3, 4, 4, 5, 4, 5, 5, 6, 6, 8, 6, 7, 6, 7, 7, 9, 7, 9, 8, 9, 8, 11, 8, 10, 9, 11, 10, 13, 10, 12, 11, 13, 11, 15, 11, 13, 12, 15, 13, 18, 13, 15, 14, 17, 15, 20, 15, 17, 15, 18, ...
[ "nonn", "look" ]
A211869
[ 0, 1, 8, 98, 1712, 58985, 2541896, 187337236, 15687030920, 2014736789165, 280434300560320, 55591630021883016, 11642487182670744000, 3.294318202343411e+21, 9.699860917408681e+23, 3.7105585890675795e+26 ]
[ "nonn", "easy", "base" ]
A241511
[ 0, 0, 0, 1, 1, 4, 5, 6, 9, 13, 17, 20, 26, 35, 43, 56, 67, 86, 105, 129, 158, 193, 232, 285, 350, 413, 507, 605, 740, 879, 1059, 1274, 1521, 1816, 2164, 2577, 3059, 3618, 4307, 5103, 5989, 7079, 8334, 9797, 11483, 13488, 157...
[ "nonn", "easy" ]
A231576
[ 3, 2, 53, 12, 33, 6, 69, 6, 19, 6, 2193, 12, 93, 6, 113, 6, 87, 6, 413, 12, 1165, 12, 143, 6, 237, 6, 47, 6, 315, 18, 779, 6, 631, 30, 797, 6, 735, 12, 567, 18, 397, 6, 351, 24, 195, 18, 39, 36, 2719, 6, 971, 6, ...
[ "nonn" ]
A221950
[ 1, 1, 2, 5, 12, 26, 57, 127, 284, 632, 1405, 3126, 6958, 15485, 34458, 76679, 170638, 379730, 845028, 1880472, 4184690, 9312363, 20723179, 46116124, 102624071, 228373494, 508208766, 1130937495, 2516720889, 5600560664, 12463153900, 27734759853, 61719281...
[ "nonn" ]
A199061
[ 9, 5, 2, 6, 0, 9, 7, 8, 3, 7, 1, 1, 3, 0, 6, 7, 1, 3, 7, 4, 7, 3, 4, 8, 0, 7, 3, 7, 9, 2, 3, 6, 0, 7, 0, 5, 8, 6, 4, 4, 5, 2, 8, 6, 2, 8, 1, 4, 1, 4, 5, 1, 1, 1, 7, 3, 6, 0, 8, 6, 8, 2, 8, 4...
[ "nonn", "cons" ]
A154027
[ 0, 10, 1000, 99990, 9998000, 999700010, 99960003000, 9995000599990, 999400099996000, 99930014999000020, 9992002099800005000, 999100279965001400000, 9.990003599440035e+22, 9.98900449916007e+24 ]
[ "nonn", "easy" ]
A163571
[ 3, 7, 19, 73, 101, 107, 263, 353, 359, 443, 521, 523, 557, 613, 733, 829, 1033, 1097, 1103, 1109, 1129, 1283, 1307, 1601, 1613, 1699, 1811, 1949, 2111, 2237, 2293, 2333, 2459, 2551, 2777, 2917, 3517, 3593, 3631, 3637, 4127, 4133, 42...
[ "nonn", "easy" ]
A072617
[ 1, 1, 1, 1, 1, 2, 1, 1, 1, 0, 0, 2, 1, 1, 2, 0, 0, 1, 1, 1, 3, 0, 0, 1, 0, 0, 2, 1, 1, 2, 0, 0, 2, 1, 1, 1, 0, 0, 3, 0, 0, 1, 0, 0, 3, 0, 0, 3, 1, 1, 1, 1, 1, 3, 0, 0, 0, 0, 0, 5, 0, 0, 3, 0...
[ "nice", "nonn" ]
A088527
[ 2, 3, 4, 4, 5, 4, 5, 6, 5, 5, 6, 5, 7, 6, 5, 6, 6, 7, 6, 6, 8, 6, 7, 6, 6, 7, 6, 7, 8, 6, 7, 6, 7, 9, 6, 7, 8, 7, 7, 6, 7, 8, 7, 7, 8, 7, 9, 7, 7, 8, 7, 7, 8, 7, 10, 7, 7, 8, 7, 9, 8, 7, 8, ...
[ "nonn", "easy", "nice" ]
A335740
[ 3, 5, 6, 7, 9, 10, 11, 13, 14, 15, 17, 18, 19, 21, 22, 23, 25, 26, 27, 29, 30, 31, 33, 34, 35, 36, 37, 38, 39, 41, 42, 43, 45, 46, 47, 49, 50, 51, 53, 54, 55, 57, 58, 59, 61, 62, 63, 65, 66, 67, 69, 70, 71, 72,...
[ "nonn" ]
A013464
[ 0, -4, 0, -1440, 35840, -7257600, 790732800, -208797388800, 48099557376000, -19670079356928000, 7390762646372352000, -4.427057815048028e+21, 2.474680614543006e+24, -2.0209953113097194e+27 ]
[ "sign" ]
A031201
[ 0, 1, 10, 100, 1000, 1259, 1295, 1529, 1592, 1925, 1952, 2159, 2195, 2519, 2591, 2915, 2951, 3368, 3386, 3558, 3585, 3638, 3683, 3836, 3855, 3863, 5129, 5192, 5219, 5291, 5358, 5385, 5538, 5583, 5835, 5853, 5912, 5921, 6338, 6383, 6833 ...
[ "nonn", "base" ]
A200849
[ 19, 643, 1531, 5179, 17491, 41467, 65851, 98299, 862483, 1316923, 2044411, 3779131, 4214779, 4929091, 6899899, 8589859, 9336403, 12754579, 16919251, 18085699, 26225443, 30233083, 48009019, 56463283, 70180963, 74691259, 82630819 ]
[ "nonn", "easy" ]
A257408
[ 1, 3, 4, 5, 7, 8, 11, 12, 13, 17, 19, 20, 23, 28, 29, 31, 37, 41, 43, 44, 47, 52, 53, 59, 61, 67, 68, 71, 73, 76, 79, 83, 89, 92, 97, 101, 103, 107, 109, 113, 116, 124, 127, 131, 137, 139, 148, 149, 151, 157, 163, ...
[ "nonn" ]
A249769
[ 1, 3, 2, 18, 6, 114, 24, 792, 120, 6120, 720, 52560, 5040, 498960, 40320, 5201280, 362880, 59149440, 3628800, 729388800, 39916800, 9699782400, 479001600, 138431462400, 6227020800, 2110960051200, 87178291200, 34261068441600, 1307674368000, 589761139968000, ...
[ "nonn" ]
A055348
[ 1, -1, 1, 0, -3, 4, 25, -98, -543, 4310, 26980, -332265, -2797178, 42158122, 524926934, -7967880874, -158385569345, 2011259946668, 69891223752628, -565397452159321, -41784073805527260, 58655029279732264 ]
[ "sign" ]
A213562
[ 1, 18, 109, 407, 1152, 2723, 5670, 10746, 18939, 31504, 49995, 76297, 112658, 161721, 226556, 310692, 418149, 553470, 721753, 928683, 1180564, 1484351, 1847682, 2278910, 2787135, 3382236, 4074903, 4876669, 5799942, 6858037 ]
[ "nonn", "easy" ]
A084686
[ 0, 0, 0, 0, 0, 2, 6, 8, 1, 7, 0, 4, 0, 0, 3, 0, 4, 0, 1, 0, 0, 2, 0, 1, 0, 1, 23, 67, 89, 22, 66, 20, 66, 88, 88, 40, 66, 52, 66, 62, 88, 70, 80, 82, 86, 88, 0, 11, 55, 77, 11, 77, 20, 30, 55, 41, 77, 5...
[ "easy", "nonn", "base", "look" ]
A168865
[ 1, 44, 1892, 81356, 3498308, 150427244, 6468371492, 278139974156, 11960018888708, 514280812214444, 22114074925221092, 950905221784507000, 40888924536733800000, 1.7582237550795534e+21, 7.56036214684208e+22 ]
[ "nonn" ]
A281787
[ 23, 2318, 233168, 23331668, 2333316668, 233333166668, 23333331666668, 2333333316666668, 233333333166666660, 23333333331666665000, 2.3333333333166667e+21, 2.3333333333316667e+23, 2.3333333333331665e+25, 2.3333333333333168e+27 ]
[ "nonn", "easy" ]
A367771
[ 1, 1, 1, 2, 0, 1, 2, 1, 1, 3, 0, 2, 0, 0, 2, 1, 1, 2, 3, 1, 1, 2, 0, 2, 0, 1, 4, 1, 0, 1, 3, 0, 1, 1, 2, 3, 2, 0, 2, 2, 0, 1, 1, 1, 4, 2, 1, 3, 2, 0, 2, 3, 0, 3, 1, 1, 3, 0, 0, 2, 0, 1, 0, 1...
[ "nonn" ]
A008144
[ 1, 4, 10, 20, 35, 54, 78, 104, 134, 171, 210, 255, 303, 355, 413, 472, 535, 605, 680, 758, 838, 923, 1016, 1107, 1202, 1311, 1418, 1525, 1640, 1759, 1883, 2009, 2143, 2284, 2420, 2563, 2714, 2860, 3017, 3185, 3348, 3516, 3691, 386...
[ "nonn", "easy" ]
A347350
[ 1, 2, 3, 4, 6, 7, 8, 9, 10, 13, 14, 15, 16, 17, 18, 22, 23, 24, 25, 26, 27, 28, 33, 34, 35, 36, 37, 38, 39, 40, 46, 47, 48, 49, 50, 51, 52, 53, 54, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 78, 79, 80, 81, 82, ...
[ "nonn" ]
A380358
[ 3, 7, 11, 15, 23, 27, 31, 43, 47, 55, 59, 63, 87, 91, 95, 107, 111, 119, 123, 127, 171, 175, 183, 187, 191, 215, 219, 223, 235, 239, 247, 251, 255, 343, 347, 351, 363, 367, 375, 379, 383, 427, 431, 439, 443, 447, 471, 475,...
[ "nonn", "base" ]
A031395
[ 7, 37, 71, 107, 151, 193, 239, 281, 337, 383, 433, 479, 541, 593, 641, 683, 743, 809, 857, 911, 971, 1021, 1069, 1123, 1193, 1249, 1301, 1373, 1439, 1487, 1549, 1601, 1657, 1721, 1783, 1861, 1907, 1987, 2029, 2089, 2143, 2237, 2287,...
[ "nonn" ]
A080078
[ 0, 1, 2, 3, 4, 5, 6, 8, 10, 13, 16, 20, 27, 33, 43, 53, 70, 86, 113, 140, 183, 226, 296, 366, 479, 592, 775, 957, 1253, 1549, 2028, 2506, 3281, 4055, 5309, 6562, 8589, 10617, 13898, 17179, 22488, 27796, 36386, 44975, 58873, 72...
[ "nonn" ]
A295947
[ 2, 4, 11, 21, 39, 68, 116, 194, 322, 529, 865, 1409, 2290, 3716, 6024, 9759, 15803, 25584, 41410, 67018, 108453, 175497, 283977, 459502, 743508, 1203040, 1946579, 3149651, 5096263, 8245948, 13342246, 21588230, 34930513, 56518781, 91449334, 147968...
[ "nonn", "easy" ]
A047203
[ 0, 2, 3, 4, 5, 7, 8, 9, 10, 12, 13, 14, 15, 17, 18, 19, 20, 22, 23, 24, 25, 27, 28, 29, 30, 32, 33, 34, 35, 37, 38, 39, 40, 42, 43, 44, 45, 47, 48, 49, 50, 52, 53, 54, 55, 57, 58, 59, 60, 62, 63, 64, 65, 67, ...
[ "nonn", "easy" ]
A041306
[ 12, 13, 103, 116, 219, 335, 889, 3891, 4780, 18231, 41242, 513135, 1067512, 3715671, 4783183, 22848403, 50479989, 73328392, 123808381, 197136773, 1503765792, 1700902565, 42325427352, 44026329917 ]
[ "nonn", "frac", "cofr", "easy" ]
A352661
[ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 2, 0, 0, 12, 17, 0, 0, 60, 82 ]
[ "nonn", "more" ]
A076052
[ 1, 3, 5, 9, 13, 17, 19, 20, 22, 23, 27, 28, 29, 33, 37, 39, 40, 44, 48, 50, 52, 53, 54, 56, 60, 62, 63, 64, 65, 66, 68, 72, 76, 78, 80, 81, 82, 83, 85, 89, 91, 95, 99, 101, 103, 105, 109, 113, 114, 115, 116, 120, ...
[ "nonn" ]
A180641
[ 7, 17, 19, 31, 41, 53, 71, 79, 89, 97, 101, 109, 127, 151, 163, 181, 191, 197, 199, 239, 241, 251, 257, 271, 307, 337, 349, 379, 401, 419, 431, 433, 449, 461, 463, 487, 491, 499, 521, 571, 577, 593, 599, 601, 631, 641, 647, ...
[ "nonn" ]
A176627
[ 1, 1, 1, 1, 12, 1, 1, 144, 144, 1, 1, 1728, 20736, 1728, 1, 1, 20736, 2985984, 2985984, 20736, 1, 1, 248832, 429981696, 5159780352, 429981696, 248832, 1, 1, 2985984, 61917364224, 8916100448256, 8916100448256, 61917364224, 2985984, 1 ]
[ "nonn", "tabl" ]
A167746
[ 1, 0, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 1, 2, 0, 1, 0, 1, 1, 1, 0, 2, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 2, 0, 1, 1, 2, 0, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 2, 1, 2, 1, 1, 0, 2, 0, 1, 1, 2...
[ "nonn" ]
A001699
[ 1, 1, 3, 21, 651, 457653, 210065930571, 4.412788774569611e+22, 1.9472704769152966e+45, 3.7918623102659263e+90 ]
[ "nonn", "easy", "core", "nice", "changed" ]
A109951
[ 0, 1, 0, 1, 1, 1, 1, 2, 2, 1, 3, 2, 2, 5, 2, 4, 3, 7, 2, 8, 2, 6, 9, 5, 3, 8, 10, 0, 14, -1, 12, 6, 6, 3, 13, 8, 4, 16, 0, 14, 17, 10, 4, 32, 7, 9, 32, 3, 28, 30, 9, 2, 42, 21, 0, 45, -3, 33, 30, -1...
[ "sign", "base" ]
A234796
[ 204, 2504, 2504, 30536, 88072, 30536, 371976, 3015344, 3015344, 371976, 4530424, 102517088, 280996212, 102517088, 4530424, 55175944, 3479085232, 25695321008, 25695321008, 3479085232, 55175944, 671983416, 118012659040, 2334950105532 ]
[ "nonn", "tabl" ]
A007819
[ 1, 10, 129, 2516, 68405, 2391495, 102022809, 5130659560, 296881218693, 19415908147835, 1415538531617771, 113796709835547760, 9998149029974753000, 952980844872975100000, 9.793001112597633e+22 ]
[ "nonn", "easy" ]
A005477
[ 0, 1, 18, 420, 16200, 1138320, 152681760, 40012315200, 20727639504000, 21349793828563200, 43852643645542620000, 1.7988371570085313e+23, 1.4746870528226107e+27, 2.4170122236238343e+31, 7.921515979737336e+35, 5.191920022780265e+40 ]
[ "nonn" ]
A348165
[ 1, 1, 0, 0, 1, 2, 0, 0, 2, 4, 0, 0, 19, 29, 0, 0, 127, 208, 0, 0, 1121, 1917, 0, 0, 10479, 19360, 0, 0, 113213, 204121, 0, 0, 1290968, 2363982, 0, 0, 15303057, 28397538, 0, 0, 187446097, 351339307, 0, 0, 2355979330, 4455357992...
[ "nonn" ]
A156115
[ 367603, 367613, 367621, 367637, 367649, 367651, 367663, 367673, 367687, 367699 ]
[ "nonn", "fini", "full", "base" ]
A114126
[ 10459, 10469, 10537, 10579, 10592, 10674, 10679, 10742, 10794, 10932, 10942, 10953, 10954, 12073, 12307, 12345 ]
[ "nonn", "base", "fini", "full" ]
A347982
[ -1, -1, 2, -1, 3, -1, 5, 6, 4, 8, 7, -1, 11, 10, 14, -1, 13, 12, 17, 18, 15, 21, 19, -1, 9, 22, 26, 20, 23, 24, 29, 28, 27, 33, 34, -1, 31, 35, 38, 30, 37, 40, 41, 32, 44, 39, 43, -1, 25, 45, 46, 50, 47, 42, ...
[ "sign" ]
A246194
[ 720, 40320, 1632960, 60480000, 2213719200, 82771476480, 3211179491520, 130241382036480, 5541589755702000, 247667354552217600, 11627089698327142000, 573008938660751540000, 2.9613698207957815e+22, 1.6029756842003278e+24, 9.075737960225369e+25 ]
[ "nonn" ]
A128942
[ 1, 2, 4, 9, 537, 1322, 1476 ]
[ "hard", "more", "nonn" ]
A018785
[ 1, 10, 13, 23, 1, 7, 356, 78, 3788, 78888, 258, 888888, 157, 2, 688, 26, 15, 128, 57, 188, 15, 2688, 2688, 888888, 277, 37888, 56, 25, 5, 12, 258, 178, 46, 8, 58, 2588, 17, 77, 17, 77, 17, 77, 88888, 7, 5, 12, 1688, 18888,...
[ "nonn", "base" ]
A382446
[ 1, 1, 4, 257, 4286, 258952, 11816512, 632854273, 43732565914, 2637804065366, 207379028199080, 14568483339859880, 1205457271871693800, 95108827011788280000, 8.187664948710536e+21, 6.988183273464769e+23, 6.247758206650718e+25, 5.627626080883126e+27 ]
[ "nonn" ]
A012738
[ 1, 1, 1, 0, -3, 0, 45, 504, 2457, 24384, 161625, 2375296, 20549397, 338479232, 3457938757, 64501554688, 772773915313, 16130341302272, 221864504883633, 5112670099460096, 79479234590193330, 2003580047549120500 ]
[ "sign" ]
A130321
[ 1, 2, 1, 4, 2, 1, 8, 4, 2, 1, 16, 8, 4, 2, 1, 32, 16, 8, 4, 2, 1, 64, 32, 16, 8, 4, 2, 1, 128, 64, 32, 16, 8, 4, 2, 1, 256, 128, 64, 32, 16, 8, 4, 2, 1, 512, 256, 128, 64, 32, 16, 8, 4, 2, 1, 1024, 512, ...
[ "nonn", "tabl", "easy" ]
A287336
[ 1, 2, 3, 4, 5, 6, 7, 8, 9, 15, 18, 45, 111, 126, 222, 285, 333, 444, 555, 666, 777, 888, 999, 1041, 1185, 1395, 1443, 1554, 1665, 1893, 1998, 2082, 2331, 2528, 2757, 2886, 3885, 4662, 4995, 6055, 6993, 7245, 10101, 11111, 11655,...
[ "nonn", "base" ]
A117129
[ 641, 1213, 2617, 2957, 3727, 5443, 9283, 17359, 33829, 66173, 131303, 264763, 494743, 957547, 1888157, 3753647, 7490797, 14961157, 29899357, 59773871, 119551489, 239106347, 478234723, 956607929, 1913366111, 3826828409, 7653840367, 15308666783, 30619196381, 5...
[ "nonn" ]
A315857
[ 1, 6, 8, 12, 14, 18, 20, 24, 26, 38, 44, 40, 44, 46, 50, 52, 56, 58, 76, 82, 72, 76, 78, 82, 84, 88, 90, 114, 120, 104, 108, 110, 114, 116, 120, 122, 152, 158, 136, 140, 142, 146, 148, 152, 154, 190, 196, 168, 172, 174...
[ "nonn" ]
A097607
[ 1, 1, 2, 4, 1, 9, 4, 1, 23, 13, 5, 1, 65, 41, 19, 6, 1, 197, 131, 67, 26, 7, 1, 626, 428, 232, 101, 34, 8, 1, 2056, 1429, 804, 376, 144, 43, 9, 1, 6918, 4861, 2806, 1377, 573, 197, 53, 10, 1, 23714, 16795, 9878, 5017...
[ "nonn", "tabf" ]
A184935
[ 3, 7, 23, 83, 181, 239, 563, 1013, 1447, 1607, 2129, 2729, 3167, 3881, 4673, 5849, 6481, 7489, 8563, 9719, 11813, 18713, 21563, 25247, 27197, 29221, 33469, 36467, 47977, 50683, 51599, 56237, 69257, 71389, 75731, 96893, 107119, 115163 ]
[ "nonn", "easy" ]
A170432
[ 1, 39, 1482, 56316, 2140008, 81320304, 3090171552, 117426518976, 4462207721088, 169563893401344, 6443427949251072, 244850262071540740, 9304309958718548000, 353563778431304800000, 1.3435423580389584e+22 ]
[ "nonn" ]
A070153
[ 5, 7, 29, 53, 63, 88, 91, 119, 403, 533, 623, 2148, 2353, 2813, 3835, 5333, 6076, 6223, 7889, 8728, 9163, 25039, 26603, 51513, 53333, 55168, 62223, 85338, 93633, 103463, 119063, 134938, 159518, 175238, 185979, 213073, 219413, 235313, 242818...
[ "nonn", "base" ]
A194385
[ 6, 12, 18, 24, 30, 36, 228, 234, 240, 246, 252, 258, 264, 456, 462, 468, 474, 480, 486, 492, 684, 690, 696, 702, 708, 714, 720 ]
[ "nonn" ]
A013591
[ 385, 595, 665, 770, 935, 1155, 1190, 1235, 1309, 1330, 1365, 1463, 1495, 1540, 1729, 1785, 1855, 1870, 1925, 1955, 1995, 2065, 2145, 2261, 2310, 2380, 2415, 2431, 2465, 2470, 2618, 2660, 2665, 2695, 2717, 2730, 2737, 2795, 2805, 2821 ]
[ "nonn" ]
A017896
[ 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 15, 18, 22, 27, 33, 40, 48, 57, 68, 79, 92, 107, 125, 147, 174, 207, 247, 295, 353, 420, 499, 591, 698, 823...
[ "nonn", "easy" ]
A353843
[ 1, 1, 2, 2, 1, 4, 1, 2, 5, 5, 5, 1, 2, 12, 1, 8, 11, 3, 3, 19, 8, 5, 27, 9, 1, 2, 34, 19, 1, 15, 26, 34, 2, 2, 49, 45, 5, 5, 68, 48, 14, 4, 58, 98, 15, 1, 18, 76, 105, 31, 1, 2, 88, 159, 46, 2, 13, 98, ...
[ "nonn", "tabf" ]
A089206
[ 2, 3, 9, 4, 8, 32, 5, 25, 125, 625, 6, 9, 18, 54, 324, 7, 49, 343, 2401, 16807, 117649, 8, 32, 256, 512, 4096, 16384, 131072, 9, 81, 243, 2187, 19683, 59049, 531441, 4782969, 10, 25, 125, 625, 1250, 3125, 31250, 156250, 1562500 ...
[ "frac", "nonn", "tabl" ]
A136957
[ 0, 64, 640, 6400, 64000, 640000, 6400000, 64000000, 640000000, 6400000000, 64000000000, 640000000000, 6400000000000, 64000000000000, 640000000000000, 6400000000000000, 64000000000000000, 640000000000000000, 6400000000000000000, 64000000000000000000 ]
[ "base", "nonn" ]
A309432
[ 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 2, 3, 3, 3, 3, 2, 2, 2, 3, 3, 3, 2, 3, 3, 3, 2, 3, 4, 4, 3, 3, 4, 4, 2, 3, 3, 3, 4, 4, 4, 3, 3, 3, 4, 4, 3, 4, 4, 4, 4, 4, 3, 4, 3, 4, 3, 4, 3, 3...
[ "nonn", "base", "easy" ]
A294070
[ 4, 6, 15, 40, 96, 204, 391, 690, 1140, 1786, 2679, 3876, 5440, 7440, 9951, 13054, 16836, 21390, 26815, 33216, 40704, 49396, 59415, 70890, 83956, 98754, 115431, 134140, 155040, 178296, 204079, 232566, 263940, 298390, 336111, 377304, 422176, 47...
[ "nonn", "easy" ]
A270503
[ 0, 3, 15, 126, 1149, 14220, 230247, 5038371, 149342775, 6042348225, 334920898542, 25514812957710, 2677815021433239, 387891078557650000, 77665115899526560000, 2.1520282031334053e+22, 8.260471327759688e+24 ]
[ "nonn" ]
A252087
[ 8389, 55703, 457442, 3603209, 28883234, 235656844, 1915241208, 15577211975, 127024329067, 1035087495381, 8431107450808, 68706137836738, 559991811143748, 4563752255803031, 37191534566124120, 303095308858045250 ]
[ "nonn" ]
A227761
[ 0, 0, 0, 0, 0, 1, 0, 2, 0, 0, 0, 1, 0, 2, 1, 0, 0, 1, 1, 1, 0, 1, 1, 2, 0, 0, 1, 1, 0, 1, 0, 1, 1, 2, 1, 0, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 2, 0, 0, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 2, 1, 0...
[ "nonn" ]
A243498
[ 2, 3, 4, 6, 7, 9, 12, 13, 15, 16, 19, 21, 22, 27, 28, 30, 31, 36, 37, 39, 42, 45, 46, 49, 51, 52, 57, 58, 60, 61, 66, 69, 72, 73, 75, 76, 81, 82, 87, 88, 91, 96, 97, 99, 102, 105, 109, 111, 112, 118, 120, 126, 12...
[ "nonn" ]
A173992
[ 1, 1, 3, 6, 15, 34, 83, 198, 488, 1202, 3015, 7608, 19432, 49994, 129779, 339176, 892600, 2362634, 6288156, 16816232, 45170466, 121812152, 329679487, 895171236, 2437885058, 6657311202, 18224979884, 50006899724, 137502724754 ]
[ "nonn", "easy", "changed" ]
A162136
[ 5, 180, 94926, 711965882, 82540673552294, 160817217467354320000, 5.609102297699535e+27 ]
[ "nonn" ]
A014007
[ 10, 21, 44, 92, 192, 401, 838, 1751, 3659, 7646, 15977, 33385, 69760, 145768, 304592, 636465, 1329935, 2778986, 5806873, 12133841, 25354455, 52979793, 110704745, 231324810, 483368330, 1010029761, 2110523290, 4410076544, 9215143569, 19255645599, 40235931720...
[ "nonn" ]
A374664
[ 0, 2, 4, 8, 9, 10, 12, 16, 17, 18, 20, 24, 32, 33, 34, 35, 36, 40, 42, 48, 49, 56, 64, 65, 66, 67, 68, 72, 73, 74, 76, 80, 82, 84, 96, 97, 100, 112, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 140, 144, ...
[ "nonn", "base", "easy" ]
A273203
[ 1, 1, 2, 6, 18, 57, 192, 666, 2362, 8548, 31422, 116967, 440100, 1671097, 6395116, 24640671, 95511110, 372179427, 1457127788, 5728994316, 22610712406, 89546822784, 355755807944, 1417433615730, 5662390311408, 22675286872185, 91008415721478, 366028366965891, 147...
[ "nonn" ]
A378946
[ 1, 3, 13, 31, 49, 68, 216, 227, 288, 339, 408, 421, 797, 1176, 1494, 1947, 3876, 6453, 12108, 12558, 13272, 24027, 80667, 92472, 98154, 186543, 765351, 2294838, 6815886, 11105034, 12608001, 13669797, 25343472, 25485726, 40937853, 48562668, 7297...
[ "nonn" ]
A239934
[ 7, 15, 28, 31, 42, 60, 56, 63, 91, 90, 42, 42, 124, 49, 49, 120, 168, 127, 63, 63, 195, 70, 70, 186, 224, 180, 84, 84, 252, 217, 210, 280, 248, 105, 105, 360, 112, 112, 255 ]
[ "nonn", "tabf", "more" ]
A113695
[ 1, 2, 30, 40, 520, 6120, 75080, 821920, 9125440, 1012882880, 11690270720, 127219466240, 1377297694720, 14982604718080, 1512710259671040, 16662943738757120, 178381140013219840, 18013061754595574000 ]
[ "base", "nonn" ]
A183508
[ 3, 12, 12, 27, 81, 27, 81, 776, 776, 81, 252, 6561, 19683, 6561, 252, 729, 59292, 531441, 531441, 59292, 729, 2187, 531441, 14369472, 43146816, 14369472, 531441, 2187, 6588, 4786704, 387420489, 3486784401, 3486784401, 387420489, 4786704, 6588 ]
[ "nonn", "tabl" ]
A139786
[ 0, 1, 13, 127, 1105, 1255, 24337, 263671, 725953, 42823, 40610545, 163341463, 780593185, 5464152295, 51309760081, 45711664183, 2200721587585, 12583941205639, 3454291215793, 430419865184215, 3012939056289505, 10122098073837608, 92791637157241100, 517919756258420600 ]
[ "nonn" ]
A157876
[ 1, -1, 1, -1, 1, -2, 2, -3, 4, -6, 9, -12, 17, -22, 30, -40, 54, -74, 100, -138, 188, -258, 352, -479, 653, -887, 1209, -1645, 2242, -3056, 4165, -5680, 7740, -10551, 14376, -19589, 26692, -36368, 49560, -67532, 92032, -125416, 1709...
[ "sign", "easy" ]
A355343
[ 2, -1, 2, -1, -1, 0, -2, 1, 0, 2, -5, 3, 0, -1, 0, -14, 9, 0, 5, 0, 0, -42, 28, 0, 13, 0, 0, 2, -132, 90, 0, 39, 0, 0, -1, 0, -429, 297, 0, 123, 0, 0, 11, 0, 0, -1430, 1001, 0, 401, 0, 0, 28, 0, 0, 0, -4862...
[ "sign", "tabl" ]
A130685
[ 0, 1, 2, 3, 4, 7, 6, 7, 14, 9, 10, 19, 12, 16, 49, 29, 29, 35, 18, 19, 32, 21, 22, 43, 24, 29, 36, 46, 57, 59, 30, 31, 55, 71, 73, 103, 36, 37, 71, 107, 68, 41, 42, 57, 44, 45, 58, 103, 48, 49, 82, 62, 163, 157...
[ "nonn" ]
A152683
[ 3, 8, 6, 8, 5, 2, 8, 0, 7, 2, 3, 4, 5, 4, 1, 5, 8, 6, 8, 7, 0, 2, 4, 6, 1, 3, 8, 4, 6, 7, 8, 2, 0, 8, 7, 6, 4, 6, 5, 1, 4, 1, 8, 5, 9, 4, 5, 7, 1, 0, 3, 4, 2, 8, 3, 8, 9, 4, 9, 4, 9, 2, 8, 8...
[ "nonn", "cons" ]