199666domain: NAppears in sequencesG.f. satisfies: A(x) = 1 + x*f(x, A(x)) where f(,) is Ramanujan's two-variable theta function.at n=10A192502Self-composition of the repunits; g.f.: A(x) = G(G(x)), where G(x) = g.f. of A002275.at n=5A276644