Denominator of Cotesian number C(n,3).

Terms

a(0) =8a(1) =45a(2) =144a(3) =105a(4) =17280a(5) =14175a(6) =5600a(7) =12474a(8) =1935360a(9) =1576575a(10) =28740096000a(11) =156370500a(12) =688816128a(13) =97692469875a(15) =158428270000