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

A336195

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

Terms

    a(0) =1a(1) =1a(2) =9a(3) =271a(4) =19353a(5) =2699251a(6) =650553183a(7) =248978967973

External references