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Question Number 77760 by abdomathmax last updated on 09/Jan/20
find the value of Σ_(n=0) ^∞  (1/(n^2  +n+1))
$${find}\:{the}\:{value}\:{of}\:\sum_{{n}=\mathrm{0}} ^{\infty} \:\frac{\mathrm{1}}{{n}^{\mathrm{2}} \:+{n}+\mathrm{1}} \\ $$

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