341796875domain: NAppears in sequencesa(n) = 7*5^n.at n=11A005055Number of ascending runs in {1,...,5}^n.at n=11A229279Hypotenuses for which there exist exactly 11 distinct integer triangles.at n=5A290501Numbers k such that uphi(k) does not divide uphi(k!).at n=21A291548