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I know that there are a lot of formulas about sums. However, I would like to ask, is there any formula that calculate the sum over squares? What I mean is that I want a formula if that exists, which gives answer to the following:

$$1+2^2 + 3^2 + 4^2 + ... + 100^2 ?$$

Thanks a lot.

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$\frac{n(n+1)(2n+1)}{6}=1^2+2^2+\ldots+n^2$

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  • $\begingroup$ Thanks a lot friend! Just upvoted $\endgroup$ – K. Stasko Jan 28 '14 at 6:19

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