65886domain: NAppears in sequencesG.f. A(x) satisfies: A(x) = G(x*A(x)) where A(x/G(x)) = G(x) = g.f. of A004304, where A004304(n) is the number of planar tree-rooted maps with n edges.at n=7A168450Number of powerful numbers that are not powers of primes (i.e. are in A286708) that do not exceed 2^n.at n=30A380431