a(n) = n^n - n*(n-1)^(n-1).

A060226

a(n) = n^n - n*(n-1)^(n-1).

Terms

    a(0) =1a(1) =0a(2) =2a(3) =15a(4) =148a(5) =1845a(6) =27906a(7) =496951a(8) =10188872a(9) =236425545a(10) =6125795110a(11) =175311670611

External references