662688domain: NAppears in sequencesG.f.: A(x) = x + x*ITERATE^2(x + x*ITERATE^4(x + x*ITERATE^6(x + x*ITERATE^8(x + ...)))), where ITERATE^n(F(x)) denotes the n-th iteration of F(x), and the nesting of even iterations continue indefinitely.at n=7A205320