a(n) = Sum_{k=0..n} (-1)^(n-k)*binomial(n-1,k-1)*k^n*n!/k!.

A317278

a(n) = Sum_{k=0..n} (-1)^(n-k)*binomial(n-1,k-1)*k^n*n!/k!.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =-15a(4) =-164a(5) =4245a(6) =46386a(7) =-4901939a(8) =39141656a(9) =11707820361a(10) =-671114863610

External references