Question Number 123620 by Dwaipayan Shikari last updated on 26/Nov/20
$$\frac{{coth}\left(\pi\right)}{\mathrm{1}^{\mathrm{7}} }+\frac{{coth}\left(\mathrm{2}\pi\right)}{\mathrm{2}^{\mathrm{7}} }+\frac{{coth}\left(\mathrm{3}\pi\right)}{\mathrm{3}^{\mathrm{7}} }+... \\ $$