-21960domain: ZAppears in sequencesExpansion of 1/(theta_3(q) * theta_3(q^2)), where theta_3() is the Jacobi theta function.at n=27A320069a(n) = 1/(cf[0;n,n,n,...,n] - cf[0;n,n,...,n]) where the first continued fraction has n+1 terms and the second has n terms.at n=3A352798