a(n) = Sum_{k=0..n} p(k)^k, where p(k) is the partition function A000041.

A259436

a(n) = Sum_{k=0..n} p(k)^k, where p(k) is the partition function A000041.

Terms

    a(0) =1a(1) =2a(2) =6a(3) =33a(4) =658a(5) =17465a(6) =1789026a(7) =172648401a(8) =55048521937

External references