a(0) = 1, a(n) = Sum_{k=1..n} stirling2(n,k) * k^(3*k).

A308491

a(0) = 1, a(n) = Sum_{k=1..n} stirling2(n,k) * k^(3*k).

Terms

    a(0) =1a(1) =1a(2) =65a(3) =19876a(4) =16895763a(5) =30685843321

External references