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

A277452

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

Terms

    a(0) =1a(1) =2a(2) =13a(3) =226a(4) =7889a(5) =458026a(6) =39684637a(7) =4788052298a(8) =766526598721

External references