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http://en.wikipedia.org/wiki/Faulhaber%27s_formula

"Since a = n(n + 1)/2, these formulae show that for an odd power (greater than 1), the sum is a polynomial in n having factors n^2 and (n + 1)^2, while for an even power the polynomial has factors n, n + 1/2 and n + 1."

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11Â¥2015-01-23 23:40:25
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fenghua_sjtu

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11Â¥: Originally posted by hank612 at 2015-01-23 23:40:25
http://en.wikipedia.org/wiki/Faulhaber%27s_formula

"Since a = n(n + 1)/2, these formulae show that for an odd power (greater than 1), the sum is a polynomial in n having factors n^2 and (n + ...

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12Â¥2015-01-24 08:17:23
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