a(n) = (n+2)^(n+2) mod n^n.

Terms

a(0) =0a(1) =0a(2) =0a(3) =20a(4) =64a(5) =1668a(6) =27712a(7) =355279a(8) =779264a(9) =170190707a(10) =6100448256a(11) =159424073982