a(n) = (7*n)!*(3/2*n)!/((7*n/2)!*(3*n)!*(2*n)!).

A276098

a(n) = (7*n)!*(3/2*n)!/((7*n/2)!*(3*n)!*(2*n)!).

Terms

    a(0) =1a(1) =48a(2) =6006a(3) =860160a(4) =130378950a(5) =20392706048

External references