20160

Appears in sequences

• Number of n-step self-avoiding walks on f.c.c. lattice ending at point with x = 2.at n=3A000767
• Orders of noncyclic simple groups (without repetition).at n=18A001034
• Order of Chevalley group D_n (2).at n=2A001308
• Order of alternating group A_n, or number of even permutations of n letters.at n=8A001710
• Index of (the image of) the modular group Gamma(n) in PSL_2(Z).at n=34A001766
• Highly composite numbers: numbers n where d(n), the number of divisors of n (A000005), increases to a record.at n=22A002182
• G.f.: q * Product_{m>=1} (1-q^m)^8*(1-q^2m)^8.at n=30A002288
• Order of largest (finite) group with n conjugacy classes.at n=9A002319
• a(n) = (2n)!/2.at n=3A002674
• Denominator of 2*Stirling_2(n,2)/n!.at n=6A002679
• Number of nonsingular n X n matrices over GF(2) (order of the group GL(n,2)); order of Chevalley group A_n (2); order of projective special linear group PSL_n(2).at n=4A002884
• Number of spanning trees in D_4 X P_n.at n=2A003761
• Order of simple Chevalley group A_n (4).at n=2A003794
• Order of universal Chevalley group A_3 (q) (or D_3 (q)), q = prime power.at n=0A003801
• Order of simple Chevalley group A_2(q), q = prime power.at n=2A003807
• Order of simple Chevalley group A_3(q) (or D_3(q)), q = prime power.at n=0A003808
• Triangle read by rows: the Bell transform of the triple factorial numbers A008544 without column 0.at n=32A004747
• Where records occur in A038548.at n=19A004778
• Expansion of e.g.f. ( (1+x)^x )^x.at n=10A007121
• The minimal numbers: sequence A005179 arranged in increasing order.at n=43A007416