a(n) = (2*n+2)*(2*n+3)*(2*n+4) = 24*A000330(n+1).

Terms

a(0) =24a(1) =120a(2) =336a(3) =720a(4) =1320a(5) =2184a(6) =3360a(7) =4896a(8) =6840a(9) =9240a(10) =12144a(11) =15600a(12) =19656a(13) =24360a(14) =29760a(15) =35904a(16) =42840a(17) =50616a(18) =59280a(19) =68880a(20) =79464a(21) =91080a(22) =103776a(23) =117600a(24) =132600a(25) =148824a(26) =166320a(27) =185136a(28) =205320a(29) =226920