Digital Library of Mathematical Functions
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NIST
33 Coulomb FunctionsVariables r,ϵ

§33.18 Limiting Forms for Large

As with ϵ and r (0) fixed,

33.18.1 f(ϵ,;r) (2r)+1(2+1)!,
h(ϵ,;r) (2)!π(2r).