A derivation of the Obara-Saika vertical recurrence for Gaussian ERIs is obtained solely from differential relations among basis functions, producing a hierarchical organization of the recursion.
Advances in Quantum Chemistry, vol
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A differential derivation of the Obara-Saika relation for Gaussian electron repulsion integrals
A derivation of the Obara-Saika vertical recurrence for Gaussian ERIs is obtained solely from differential relations among basis functions, producing a hierarchical organization of the recursion.