a(n) = 1 + Sum_{k=0..n-1} (1 + k^5) * a(k) * a(n-1-k).

A385838

a(n) = 1 + Sum_{k=0..n-1} (1 + k^5) * a(k) * a(n-1-k).

Terms

    a(0) =1a(1) =2a(2) =7a(3) =247a(4) =61006a(5) =62715298a(6) =196236522104

External references