Coe's p8 is a period-8 oscillator that was found by Tim Coe on August 19, 1997. In terms of its 17 cells, it is tied with smiley as third-smallest known period-8 oscillator. It consists of two blocks hassling an unnamed object, similar to blocker. The unnamed object is a hive predecessor that looks like two linked gliders. The spark created by the block eating can support the bumper, but the blocker would be smaller for that purpose.
Coe's p8 is about the forty-seventh most common naturally-occurring oscillator in Achim Flammenkamp's census. On Catagolue, it is the third most common period 8 oscillator, being less common than the blocker but more common than smiley.
In August, 2004 Mark Niemiec found a 16-glider synthesis of this oscillator. In October, 2010 Martin Grant and Matthias Merzenich found an 8-glider synthesis, based on a predecessor discovered by Lewis Patterson. The best synthesis known as of July 2017 uses 5 gliders and was found by gmc_nxtman and Mark Niemiec on July 8, 2017.
- ↑ Jason Summers' all-osc pattern collection.
- ↑ Achim Flammenkamp (September 7, 2004). "Most seen natural occurring ash objects in Game of Life". Retrieved on January 15, 2009.
- ↑ Adam P. Goucher. "Statistics". Catagolue. Retrieved on October 27, 2018.
- ↑ Jason Summers' jslife pattern collection.
- ↑ Matthias Merzenich. Re: Thread For Your Accidental Discoveries (discussion thread) at the ConwayLife.com forums
- ↑ Mark Niemiec. Re: Thread for your unsure discoveries (discussion thread) at the ConwayLife.com forums
- 17P8.2 at Heinrich Koenig's Game of Life Object Catalogs