74724249600
domain: N
Appears in sequences
- (2*n)!-Sum ((-1)^(i+1)*binomial(n,i)*2^i*(2*n-1)!,i=1..n).at n=6A006548
- The number of permutations of n cards in which 2 is the first card hit and 3 the next hit after 2.at n=13A018931
- Denominators of nonzero numbers appearing in the Euler-Maclaurin summation formula. (See A060054 for the definition of these numbers.)at n=7A060055
- a(n) = n! * (n-1).at n=12A062119
- Denominators of coefficients in expansion of x/(exp(x)-1).at n=14A227830
- Denominators of eta(2*n)/Pi^(2*n), where eta(n) is the Dirichlet eta function.at n=7A230265
- Expansion of e.g.f. Sum_{k>=1} arctan(x^k).at n=13A330511
- Number of cyclic Latin squares of order n.at n=12A338522