From Numberphile.

Featuring Neil Sloane, founder of the OEIS… See the extra patterns and variations (including three knights) at https://youtu.be/VgmDuBCayPw
More links & stuff in full description below ↓↓↓

With thanks also to Jonas Karlsson – https://jonka364.github.io/

Neil Sloane is the founder of the On-Line Encyclopedia of Integer Sequences – https://oeis.org/

More videos with Neil Sloane: https://www.youtube.com/playlist?list=PLt5AfwLFPxWJXQqPe_llzWmTHMPb9QvV2

See our Trapped Knight video – https://youtu.be/RGQe8waGJ4w

More chess-related videos – https://www.youtube.com/playlist?list=PLt5AfwLFPxWKX9OPJqBQTdIOAKthKzQ9m

OEIS sequences related to this video:
https://oeis.org/A308885 (only black knights)
https://oeis.org/A392177 & https://oeis.org/A392178 (red & black knights)
https://oeis.org/A395357 (the final spiral)

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