Real part of (n + n*i)^n.

Terms

a(0) =1a(1) =1a(2) =0a(3) =-54a(4) =-1024a(5) =-12500a(6) =0a(7) =6588344a(8) =268435456a(9) =6198727824a(10) =0a(14) =0a(18) =0