a(n) = n^n - A002275(n).

Terms

a(0) =0a(1) =-7a(2) =-84a(3) =-855a(4) =-7986a(5) =-64455a(6) =-287568a(7) =5666105a(8) =276309378a(9) =8888888889a(10) =274200559500