[seqfan] Looking for a function expanding to (1-q^k)^(-1) terms

Thomas Baruchel baruchel at gmx.com
Mon Jun 8 11:07:34 CEST 2020


is someone aware of some function expanding to the following series:

     x/(1-q)  +  x^2 / (1-q^2)   +  x^3 / (1-q^3)   + ...

I have a close match with the QPolyGamma function which evaluates to the
sum above at x=1, but I am not sure I can fully build the given series from it.

Thank you by advance,

best regards,

Thomas Baruchel

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