497871360000
domain: N
Appears in sequences
- a(n) = denominator of sum_{k=1..n} k^(-4).at n=7A007480
- Denominators of 1/4!*(H(n,1)^4+6*H(n,1)^2*H(n,2)+8*H(n,1)*H(n,3)+3*H(n,2)^2+6*H(n,4)), where H(n,m) = Sum_{i=1..n} 1/i^m are generalized harmonic numbers.at n=7A072914
- a(n) = [n/2]!*[(n+1)/2]!*C([n/2],4)*C([(n+1)/2],4).at n=14A226285
- Number of black-white-balanced permutations of [n].at n=14A387861