a(n) = 16^n * Sum_{k=0..n} binomial(2*k,k)^3 / 16^k.

A167870

a(n) = 16^n * Sum_{k=0..n} binomial(2*k,k)^3 / 16^k.

Terms

    a(0) =1a(1) =24a(2) =600a(3) =17600a(4) =624600a(5) =25996608a(6) =1204834752a(7) =59701593600

External references