a(n) = 2*n^n, n >= 2, otherwise a(n) = 1.

A013499

a(n) = 2*n^n, n >= 2, otherwise a(n) = 1.

Terms

    a(0) =1a(1) =1a(2) =8a(3) =54a(4) =512a(5) =6250a(6) =93312a(7) =1647086a(8) =33554432a(9) =774840978a(10) =20000000000a(11) =570623341222

External references