a(n) = Sum_{k=0..n} n^k * binomial(n,k) * Catalan(k).

A338979

a(n) = Sum_{k=0..n} n^k * binomial(n,k) * Catalan(k).

Terms

    a(0) =1a(1) =2a(2) =13a(3) =199a(4) =5073a(5) =181776a(6) =8413021a(7) =478070020a(8) =32238960193

External references