The Immortal Kangaroo Sequence - Numberphile

Neil Sloane shares the comma sequence. Then thoughts turn to immortal kangaroos leaping through minefields. More links & stuff in full description below ↓↓↓ BONUS MATERIAL A digital curiosity associated with this video -   / 168587472   (open access) BTS timelapse of this video being filmed (Patrons only) -   / 168593344   See more Neil Sloane videos on Numberphile:    • Neil Sloane on Numberphile   Neil is the founder of the On-Line Encyclopedia of Integer Sequences (OEIS): https://oeis.org/ Some OEIS sequences related to this video... Original sequence when we start at 1 - https://oeis.org/A121805 Landmines: https://oeis.org/A367341 Numbers where there are two choices: https://oeis.org/A367346 The infinite path (strictly speaking, it is the lowest infinite path, because there could be more than one): https://oeis.org/A367620 The sequence of 0's and 1's that lead to immortality (as we know it so far): https://oeis.org/A399179 Videos from Brady's chemistry trip to Australia (featuring wallabies, kangaroos, and koalas) -    • Australia Trip - Periodic Videos   Patreon:   / 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:   / bradyharan   Brady's latest videos across all channels: http://www.bradyharanblog.com/ Sign up for (occasional) emails: http://eepurl.com/YdjL9