514321285119domain: NAppears in sequencesNumbers n such that H(n)/H(n^2) is a new record, where H(n) = A000120(n) is the sum of the binary digits of n.at n=17A260986a(n) is the least number k such that (the binary weight of k) - (the binary weight of k^2) = n.at n=26A356877