N. J. A. Sloane: Videos (1), Youtube/Numberphile Videos Produced by Brady Haran

Each of the following talks contains some new and fascinating unsolved problems, most of which are still unsolved today.
For videos of talks I have given at Rutgers seminars and at various conferences see here.
The talks below are listed in reverse chronological order.     Neil Sloane, Oct 12 2026.
Note: Some of the pdf files of slides are very large and may not open in a browser. They should be downloaded directly off my homepage.

  1. Brady Haran and N. J. A. Sloane, The Immortal Kangaroo Sequence, YouTube Numberphile video, 2026.
  2. Brady Haran and N. J. A. Sloane, Long-Legged Letters, YouTube Numberphile video, 2026.
  3. Brady Haran and N. J. A. Sloane, The Unsolved Lollipop Problem, YouTube Numberphile video, 2026.
  4. Brady Haran and N. J. A. Sloane, Red & Black Knights (extraordinary result); Part 2: Brady Haran, Amazing Chessboard Patterns, YouTube Numberphile videos, 2026
  5. Brady Haran and N. J. A. Sloane, Cutting Moons, YouTube Numberphile video, 2026.
  6. Brady Haran and N. J. A. Sloane, Awkward Primes, YouTube Numberphile video, 2026.
  7. Brady Haran and N. J. A. Sloane, The Yellowstone Permutation, Numberphile video, Jan 29 2023.
  8. Brady Haran and N. J. A. Sloane, "A Number Sequence with Everything" (the Inventory Sequence A342585), Numberphile video, November 2022.
  9. Brady Haran and N. J. A. Sloane, Problems with Powers of Two, Youtube Numberphile Video, Sep 21 2022; STOP PRESS: Postscript to Problems with Powers of Two, Sep 21 2022. See A352178 for the latest results.
  10. Brady Haran and N. J. A. Sloane, Stones on an Infinite Chessboard, Numberphile video, January 2022.
  11. Brady Haran and N. J. A. Sloane, Most wanted prime, Numberphile video, December 2021.
  12. Brady Haran and N. J. A. Sloane, A Sequence with a Mistake, Numberphile video, May 2021.
  13. Brady Haran and N. J. A. Sloane, Planing Sequences (Le Rabot), Numberphile video, June 2021.
  14. Brady Haran and N. J. A. Sloane, Eureka Sequences, Numberphile video, April 2021.
  15. Brady Haran and N. J. A. Sloane, The Levine Sequence, Numberphile video, March 2021.
  16. Brady Haran and N. J. A. Sloane, The Brussels Choice, Numberphile video, August 2020. (Also called Choix de Bruxelles.)
  17. Brady Haran and N. J. A. Sloane, Dungeon Numbers, Numberphile video, July 2020.
  18. Brady Haran and N. J. A. Sloane, Dungeon Numbers (extra), Numberphile video, July 2020.
  19. Brady Haran and N. J. A. Sloane, Amazing Graphs (III), Numberphile video, August 2019.
  20. Brady Haran and N. J. A. Sloane, Amazing Graphs (II), Numberphile video, August 2019.
  21. Brady Haran and N. J. A. Sloane, Amazing Graphs (I), Numberphile video, August 2019.
  22. Brady Haran and N. J. A. Sloane, Don't Know (the Van Eck Sequence), Numberphile video, June 2019.
  23. Brady Haran and N. J. A. Sloane, Peaceable Queens, Numberphile video, May 2019.
  24. Numberphile Podcast, The Number Collector (with Neil Sloane), August 2019.
  25. Brady Haran and N. J. A. Sloane, How many ways can circles overlap?, Numberphile video, April 2019.
  26. Brady Haran and N. J. A. Sloane, The Trapped Knight, Numberphile video, Jan 2019.
  27. Brady Haran and N. J. A. Sloane, Terrific Toothpick Patterns, Numberphile video, Dec 2018.
  28. Brady Haran and N. J. A. Sloane, What Number Comes Next?, Numberphile video, Nov 2018.
  29. Brady Haran and N. J. A. Sloane, Primes on the Moon (Lunar Arithmetic), Numberphile video, Nov 2018.

Total views as of October 12 2026 about 12 million.

See also my [ other videos and slides of talks | publication list | home page ]