77117domain: NAppears in sequencesNumbers k such that the "inventory" A063850 of k is a perfect square.at n=27A079465a(n) = a(n-1) + a(n-2) + a(n-4) with a(0) = 2, a(1) = 3, a(2) = 6, a(3) = 9.at n=19A095982Maximum starting value of X such that repeated replacement of X with X-ceiling(X/5) requires n steps to reach 0.at n=46A279075