a(n) = (n^n mod n!)/n.

Terms

a(0) =0a(1) =0a(2) =1a(3) =4a(4) =1a(5) =96a(6) =289a(7) =512a(8) =25281a(9) =265600a(10) =2391001a(11) =36972288a(12) =405301681a(13) =21023744a(14) =54720993825