27926126553domain: NAppears in sequencesG.f. A(x) satisfies: A(x)^7 = A(x^7) + 7*x.at n=15A352705G.f. A(x) satisfies: (1 - x*A(x))^7 = 1 - 7*x - x^7*A(x^7).at n=14A352706