a(n) = (10*n)!*(3*n/2)!/((5*n)!*(9*n/2)!*(2*n)!).

A364181

a(n) = (10*n)!*(3*n/2)!/((5*n)!*(9*n/2)!*(2*n)!).

Terms

    a(0) =1a(1) =384a(2) =461890a(3) =638582784a(4) =935387159850

External references