-2618domain: ZAppears in sequencesG.f. A(x) satisfies: A(x) = 1 + x * A(x) / (1 - x) - x * A(x)^2.at n=15A349015Expansion of 1 / Sum_{k in Z} x^(3*k) / (1 - x^(5*k+1)).at n=53A375064