390700800domain: NAppears in sequencesa(n) = (n-1)*(n-2)*...*(n-r) with the least value of r so that n divides a(n).at n=15A092914Products of 7 consecutive integers.at n=20A159083a(n) = RisingFactorial(2*n, n) = A124320(2*n, n).at n=7A352601a(n) = n! / floor(2n/3)!.at n=20A374647