Karel's p177

Karel's p177 (or 104P177) is a period-177 oscillator discovered by Karel Suhajda in June 2007.[1] In terms of its minimum population of 104 cells, it is the smallest known period 177 oscillator. It can serve as a 90° or 180° degree reflector in many ways, and with the correct phasing, a glider can pass through it unharmed. On March 21, 2009 Jason Summers found a 24-glider synthesis of this oscillator.[2]

Karel's p177
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Pattern type Oscillator
Number of cells 104
Bounding box 62×62
Period 177
Mod 177
Heat 215.3
Volatility 1.00
Strict volatility 1.00
Discovered by Karel Suhajda
Year of discovery 2007

The first known semi-natural appearance of this oscillator was in December 2014, in a symmetric soup found by Dongook Lee using apgsearch.[3]

Several reactions involving Karel's p177
Download RLE: click here
gollark: I'm libcenter, and also no.
gollark: I don't think most phone keyboards have features for that. There are, after all, over a hundred thousand unicode characters by now.
gollark: 🦄
gollark: Unicorn?
gollark: I don't think there is a baseball bat emoji.

See also

References
  1. Jason Summers' all-osc pattern collection.
  2. Jason Summers' jslife pattern collection. Retrieved on January 5, 2020.
  3. Dongook Lee (December 19, 2014). Re: Soup search results (discussion thread) at the ConwayLife.com forums
  • 104P177.1 at Heinrich Koenig's Game of Life Object Catalogs
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