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Some sigma problem

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Compute $\frac{1}{2^3 - 2} + \frac{1}{3^3 - 3} + \frac{1}{4^3 - 4} + \dots + \frac{1}{100^3 - 100}.$

I suspect the rule to be the start to be 1, the end to be 100 and the rule to be 1/(n^3-n)

Dec 2, 2020