3877632domain: NAppears in sequencesa(n) = (5*n+7)(!^5)/7(!^5), related to A034323 ((5*n+2)(!^5) quintic, or 5-factorials).at n=5A051688Numbers n such that n = k/d(k) has exactly 6 solutions, where d(k) = number of divisors of k.at n=21A217127