Neumann expansion of the interelectronic distance function for integer powers. II. Modified formula and numerical test
Jan Budziński, S. Prajsnar · The Journal of Chemical Physics · 1994
Using the set of polynomials, orthogonal in the interval <1,∞), the modified form of the Neumann expansion of the interelectronic distance function r12k for integer k≥−1 is obtained. In order to verify this expansion and especially its convergence properties in applications the numerical test has been done.