132848domain: NAppears in sequencesExpansion of Product_{k=1..24} theta_3(q^k), where theta_3() is the Jacobi theta function.at n=42A320248G.f. A(x) satisfies: A(x) = 1 + x * A(x) / (1 - x) - x * A(x)^2.at n=20A349015