With Matt Parker. This is a continuation from: https://youtu.be/cjx23aMeBkQ
The original trilogy of videos where this all started: http://bit.ly/GoldenTrilogy
More Matt Parker videos on Numberphile: http://bit.ly/Matt_Videos
Matt Parker's website Standupmaths (for more videos, books, merchandise, toys, talks, school visits, all that stuff) --- http://standupmaths.com
Matt's book (US): http://bit.ly/Matt_4D_US
Matt's book (UK): http://bit.ly/Matt_4D_UK
Parker Square T-Shirts: https://teespring.com/stores/parker-shapes
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