1744364160domain: NAppears in sequencesa(n) = (3n+3)!/(2n+3)!.at n=8A001763Triangle a(n,k) read by rows n which contain columns k=1,2,..,n, where each entry is the product of numbers (k-1)*n-T(k-2)+1 through k*n-T(k-1).at n=38A093447Products of 7 consecutive integers.at n=24A159083