a(n) = Sum_{k=0..n} k^(k+n) * Stirling1(n,k).

A351180

a(n) = Sum_{k=0..n} k^(k+n) * Stirling1(n,k).

Terms

    a(0) =1a(1) =1a(2) =15a(3) =635a(4) =53112a(5) =7367444a(6) =1529130770a(7) =443685287576

External references