-838115523723domain: ZAppears in sequencesG.f. A(x) satisfies [x^(2*n)] A(x)^(5*n) = 5 and [x^(2*n+1)] A(x)^(5*n+2) = [x^(2*n+1)] A(x)^(5*n+3) for n >= 1.at n=18A377097