3534300

Appears in sequences

• Triangle T(n,k) giving number of degree-2n permutations which decompose into exactly k cycles of even length, k=0..n.at n=25A204420
• Numbers n such that there exists a pair x,y, where x<y, x! = n and y! = n, that makes {x,y,n,n} an amicable multiset.at n=8A273969