Proposition: Sum of Squares
The sum of consecutive square numbers to a given number $n^2$ can be calculated by the following formula
$$\sum_{k=0}^n k^2=\frac{n(n+1)(2n+1)}6.$$
Table of Contents
Proofs: 1 
Thank you to the contributors under CC BY-SA 4.0!   
  
- Github:
-   
 
References
Bibliography
- Forster Otto: "Analysis 1, Differential- und Integralrechnung einer Veränderlichen", Vieweg Studium, 1983