4194272domain: NAppears in sequences2^(n-1)*A000668(n).at n=5A061029a(n) = 32*(2^n - 1).at n=17A175165a(n) = 4^n - 3*n + 1.at n=11A175976Numbers that are either already perfect, or a perfect number is eventually reached if we start doubling them.at n=35A341622