I am currently using the HypExp and HPL packages, which are useful for expanding hypergeometric functions in series around integer or half-integer values, as in common in dimensional regularization for particle physics calculations.
Expanding a certain hypergeometric function gives me something of the form
This is odd because HPL should only take integer values where "minus" and "plus" appear; furthermore, this function cannot be reduced by the packages. I am running Mathematica v. 11. Can anyone offer some help?