a(n) = Sum_{k=0..n} A136630(n,k) * 2^(nk).

A136632

a(n) = Sum_{k=0..n} A136630(n,k) * 2^(nk).

Terms

    a(0) =1a(1) =2a(2) =16a(3) =520a(4) =66560a(5) =33882144a(6) =69055086592

External references