a(n) = A203530(n)/A000178(n-1); A000178 = (superfactorials).

A203533

a(n) = A203530(n)/A000178(n-1); A000178 = (superfactorials).

Terms

    a(0) =1a(1) =10a(2) =840a(3) =464100a(4) =1481407200

External references