a(n) = (12*n)!*(3*n)!/((8*n)!*(6*n)!*n!).

A295434

a(n) = (12*n)!*(3*n)!/((8*n)!*(6*n)!*n!).

Terms

    a(0) =1a(1) =99a(2) =22287a(3) =5663700a(4) =1517599215a(5) =418974963099

External references