a(n) = n^(n-1) + (n-1)!.

A301347

a(n) = n^(n-1) + (n-1)!.

Terms

    a(0) =2a(1) =3a(2) =11a(3) =70a(4) =649a(5) =7896a(6) =118369a(7) =2102192a(8) =43087041a(9) =1000362880a(10) =25941053401a(11) =743048287488

External references