---
title: Long Legged Letters - Numberphile
link: https://www.youtube.com/watch?v=3KWwMzSxB1Y
source: youtube-com-numberphile
published: 2026-07-04T15:16:30Z
updated: 2026-07-12T21:24:54Z
first_seen: 2026-09-08T10:17:10.166315Z
authors:
- Numberphile
summary: |-
  The legendary Neil Sloane discusses the use of 'long-legged letters' to chop infinite pancakes. More links & stuff in full description below ↓↓↓

  See more Neil Sloane videos on Numberphile: https://www.youtube.com/playlist?list=PLt5AfwLFPxWJXQqPe_llzWmTHMPb9QvV2

  Neil is the founder of the On-Line Encyclopedia of Integer Sequences (OEIS): https://oeis.org/

  Some OEIS sequences related to this video (to get you started)...
  https://oeis.org/A130883
  https://oeis.org/A117625

  Concrete Mathematics: https://amzn.to/4gpw2U9

  Patreon: http://www.patreon.com/numberphile

  Numberphile is supported by Jane Street. Learn more about them (and exciting career opportunities) at: https://bit.ly/numberphile-janestreet

  We are also grateful for support from the Ben Delo Foundation - https://delo.org/

  NUMBERPHILE
  Website: http://www.numberphile.com/

  Video by Brady Haran & Pete McPartlan

  Numberphile T-Shirts and Merch: https://teespring.com/stores/numberphile

  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
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---

The legendary Neil Sloane discusses the use of 'long-legged letters' to chop infinite pancakes. More links & stuff in full description below ↓↓↓

See more Neil Sloane videos on Numberphile: https://www.youtube.com/playlist?list=PLt5AfwLFPxWJXQqPe\_llzWmTHMPb9QvV2

Neil is the founder of the On-Line Encyclopedia of Integer Sequences (OEIS): https://oeis.org/

Some OEIS sequences related to this video (to get you started)...\
https://oeis.org/A130883\
https://oeis.org/A117625

Concrete Mathematics: https://amzn.to/4gpw2U9

Patreon: http://www.patreon.com/numberphile

Numberphile is supported by Jane Street. Learn more about them (and exciting career opportunities) at: https://bit.ly/numberphile-janestreet

We are also grateful for support from the Ben Delo Foundation - https://delo.org/

NUMBERPHILE\
Website: http://www.numberphile.com/

Video by Brady Haran & Pete McPartlan

Numberphile T-Shirts and Merch: https://teespring.com/stores/numberphile

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