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n-1-coth-npi-n-4-




Question Number 128725 by Dwaipayan Shikari last updated on 09/Jan/21
Σ_(n=1) ^∞ ((coth(nπ))/n^4 )
$$\underset{{n}=\mathrm{1}} {\overset{\infty} {\sum}}\frac{{coth}\left({n}\pi\right)}{{n}^{\mathrm{4}} } \\ $$

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