The greatest mathematician in all of antiquity, Archimedes, found you could add up the first n square numbers with a relatively simple formula:
Use this fact to find the sum of the first 22 square numbers.
Answer: The sum of the first 22 square numbers is
Archimedes
(Source: http://www-groups.dcs.st-and.ac.uk/~history/Mathematicians/Archimedes.html)
Use this fact to find the sum of the first 22 square numbers.
Answer: The sum of the first 22 square numbers is
Archimedes

(Source: http://www-groups.dcs.st-and.ac.uk/~history/Mathematicians/Archimedes.html)