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Mathematics 7 Online
OpenStudy (inkyvoyd):

Rawr. (Sequences)

OpenStudy (inkyvoyd):

What is \[\sum_{i=1}^{n}i^a\] for any natural number a?

OpenStudy (inkyvoyd):

Also, any easy way to explain why?

OpenStudy (anonymous):

You are looking for http://en.wikipedia.org/wiki/Faulhaber's_formula

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