41731domain: NAppears in sequencesNumbers k such that k and k^2 use only the digits 1, 3, 4, 6 and 7.at n=15A137025Number of unlabeled rooted trees with n nodes such that the minimal outdegree of inner nodes equals 9.at n=53A244463Numbers that are the sum of seven fourth powers in exactly eight ways.at n=27A345830