a(n) = (30*n)!*(5*n)!*(3*n)!/((15*n)!*(12*n)!*(10*n)!*n!).

A295465

a(n) = (30*n)!*(5*n)!*(3*n)!/((15*n)!*(12*n)!*(10*n)!*n!).

Terms

    a(0) =1a(1) =84021990

External references