a(n) = binomial(8*n + 6, 4*n + 1)/(8*n + 6).

A265102

a(n) = binomial(8*n + 6, 4*n + 1)/(8*n + 6).

Terms

    a(0) =1a(1) =143a(2) =22610a(3) =3991995a(4) =757398510a(5) =150946230006

External references