122917domain: NAppears in sequencesExpansion of 1/((1 - x)*(2 - theta_2(sqrt(x))/(2*x^(1/8)))), where theta_2() is the Jacobi theta function.at n=26A303668a(n) = 2^n*(n + 2) + (n - 7)*n/2 - 2.at n=12A362526