28740096000
domain: N
Appears in sequences
- Expansion of e.g.f. 1/(1-x-x^3).at n=12A052556
- Denominator of Cotesian number C(n,3).at n=10A100648
- Cumulative product of quintuple factorial A085157.at n=11A114790
- a(n) = phi(binomial(2*n,n)*n).at n=18A131928
- Number of permutations of {1,2,3,...,n} such that no multiples of 3 are adjacent.at n=14A258216
- a(n) = Product_{k=0..n} (5*k + 1)!.at n=2A294323
- E.g.f. A(x) satisfies A(x) = 1 - x*A(x) * log(1 - x^2*A(x)^2).at n=12A392933