# Telescopic summation

Algebra Level 3

$\large \frac{1}{3^2+1} +\frac{1}{4^2 +2}+ \frac{1}{5^2+3}\ + \frac{1}{6^2+4}\ + \cdots$

The series above can be expressed as $$\dfrac mn$$, where $$m$$ and $$n$$ are coprime positive integers.

Find $$m+n$$.

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