Gaussian basis sets for the atoms from K through Xe

An improved generator coordinate Hartree-Fock (IGCHF) method is used to gen erate Gaussian basis sets for the atoms from K (Z = 19) through Xe (Z = 54) . The Griffin-Hill-Wheeler-HF equations are integrated using the integral d iscretization technique. The ground state HF total energies obtained by us are compared with those calculated with the original GCHF method and with o ther approaches reported in the literature. The largest difference between our energy values and the corresponding ones computed with a numerical HF m ethod is equal to 6.003 mhartree for Kr (Z = 36).