Transformation of Harmonics for Molecular Calculations

The evaluation of multicenter integrals over Gaussian and exponential-type orbitals requires the rotation
and translation of spherical harmonics. We used computer algebra (CA) to construct a machine readable
table of formulas for these transformations that support unrestricted precision numerical computations.
Extensive checks are provided. The calculation is presented in an easy to follow top-down functional
programming style that is very powerful and can be applied to many problems of computational chemistry.