Monday, 26 August 2013

$\sum_{k=1}^{\infty}\frac1{(3k+1)(3k+2)}$

$\sum_{k=1}^{\infty}\frac1{(3k+1)(3k+2)}$

What is the value of $\sum_{k=1}^{\infty}\frac1{(3k+1)(3k+2)}$

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