Matt Parker discusses a problem involving Square Sums. Go deeper with extra footage: https://www.youtube.com/watch?v=7_ph5djCCnM More links & stuff in full description below ↓↓↓ More Matt Parker on Numberphile: http://bit.ly/Matt_Videos Matt's projects and other stuff: http://standupmaths.com/ This problem is discussed in Matt's book: http://amzn.to/2mksdD5 Thanks to Charlie Turner - more from her in Part 2: https://www.youtube.com/watch?v=7_ph5djCCnM Parker Square T-Shirts: http://bit.ly/ParkerSquareTshirt Discuss on Brady's subreddit: https://redd.it/7pnbqm Numberphile is supported by the Mathematical Sciences Research Institute (MSRI): http://bit.ly/MSRINumberphile We are also supported by Science Sandbox, a Simons Foundation initiative dedicated to engaging everyone with the process of science. NUMBERPHILE Website: http://www.numberphile.com/ Numberphile on Facebook: http://www.facebook.com/numberphile Numberphile tweets: https://twitter.com/numberphile Subscribe: http://bit.ly/Numberphile_Sub Videos by Brady Haran Patreon: http://www.patreon.com/numberphile Thank you to these Patrons: Jeremy Buchanan Arjun Chakroborty Jeff Straathof Susan Silver Yana Chernobilsky Christian Cooper James Bissonette Ken Baron Bill Shillito Tony Fadell Ryan Mehendale Turner Lehmbecker Bernd Sing Dr Jubal John Thomas Buckingham Ole Kristian Merli Tianyu Ge BITISM CO Joshua Davis Steve Crutchfield Jon Padden Kristo Käärmann Vali Dobrota D Hills Eric Mumford Charles Southerland Arnas Ian George Walker Paul Bates Tracy Parry George Greene Igor Sokolov Alfred Wallace Brady's videos subreddit: http://www.reddit.com/r/BradyHaran/ Brady's latest videos across all channels: http://www.bradyharanblog.com/ Sign up for (occasional) emails: http://eepurl.com/YdjL9