1838865600domain: NAppears in sequencesa(1) = 1; a(n) = (7*n-9)*a(n-1) for n > 1.at n=7A147585Triangle T(n, k) = Product_{j=0..k} (j*n + prime(m)), with T(n, 0) = prime(m) and m = 3, read by rows.at n=34A153271