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Hello there.

This is Numberphile. We mainly post videos about mathematics and just numbers in general.

Red & Black Knights

Red & Black Knights

Featuring Neil Sloane, founder of the OEIS

See the extra patterns and variations (including three knights) at https://youtu.be/VgmDuBCayPw

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)

Rubik's Cubes & Ridiculous Numbers

Rubik's Cubes & Ridiculous Numbers