a(0) = 1; a(n) = Sum_{k=0..n-1} binomial(k+3,3) * binomial(n-1,k) * a(k) * a(n-1-k).
A385945
a(0) = 1; a(n) = Sum_{k=0..n-1} binomial(k+3,3) * binomial(n-1,k) * a(k) * a(n-1-k).
Terms
- a(0) =1a(1) =1a(2) =5a(3) =63a(4) =1533a(5) =62736a(6) =3969387a(7) =366744330a(8) =47441881377
External references
- oeis: A385945