Tuesday, 9 June 2015

calculus - Computing a limit involving Gammaharmonic series

It's a well-known fact that
limn(Hnlog(n))=γ.



If I use that Γ(1n)n when n is large, then I wonder if it's possible to compute the following limit in a closed-form




limn(1Γ(11)+1Γ(12)++1Γ(1n)log(Γ(1n))),


where I called k=11Γ(1k) as Gammaharmonic series.
I can get approximations, but I cannot get the precise limit, and I don't even know if it can be expressed in terms of known constants.



A 500 points bounty moment: I would enjoy pretty much finding a solution (containing a closed-form) for the posed limit, hence the generous bounty. It's unanswered for 3 years and 8 months, and it definitely deserves another chance. Good luck!

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