a(n) = Product_{i=1..n} i^s(n,i), where s is an unsigned Stirling number of the 1st kind.

A319761

a(n) = Product_{i=1..n} i^s(n,i), where s is an unsigned Stirling number of the 1st kind.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =24a(4) =5971968

External references