a(n) = (12*n)!*n! / ((6*n)!*(4*n)!*(3*n)!).A295431a(n) = (12*n)!*n! / ((6*n)!*(4*n)!*(3*n)!).Terms a(0) =1a(1) =4620a(2) =89237148External referencesoeis: A295431