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

A226238

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

Terms

    a(0) =2a(1) =12a(2) =84a(3) =780a(4) =9330a(5) =137256a(6) =2396744a(7) =48427560a(8) =1111111110a(9) =28531167060a(10) =810554586204

External references