5079110400domain: NAppears in sequencesa(n) = smallest (n+1)(n+2)...(n+k) that is >= n!.at n=11A075358Number of labeled plane 2-trees on n triangles.at n=8A093197Product of 8 consecutive integers. a(n) = RisingFactorial(n, 8).at n=13A239035a(n) = Product_{k=0..2*n-1} (3*n+k+1).at n=4A384303