Database of Theta Series of Lattices obtaind from Imaginary Quadratic Fields Q(\sqrt{-d})

We give the theta series of the lattices obtaind from the imaginary quadratic fields whose class number is 2.
We denote by L_1 and L_2 the lattices corresponding to a principal and a nonprincipal ideal, respectively. (We set P_1=x^2-y^2 and P_2=xy.)