a(n) = 12 * (5*n+2)! / ((3*n+1)! * (2*n+2)!).

A384668

a(n) = 12 * (5*n+2)! / ((3*n+1)! * (2*n+2)!).

Terms

    a(0) =12a(1) =105a(2) =1584a(3) =29172a(4) =596904a(5) =13037895a(6) =297748800a(7) =7023149820a(8) =169774618104

External references