a(0) = 1; a(n) = Sum_{k=0..n-1} binomial(n,k)^3 * a(k) * a(n-k-1).
A346187
a(0) = 1; a(n) = Sum_{k=0..n-1} binomial(n,k)^3 * a(k) * a(n-k-1).
Terms
- a(0) =1a(1) =1a(2) =9a(3) =279a(4) =20655a(5) =2997405a(6) =753171615a(7) =300907367775
External references
- oeis: A346187