Pi-R-Squared spaceship

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The Pi-R-Squared spaceship is a fictituous spaceship due to Dave Greene, supposedly consisting of two pi grandparents and two R-pentominos, with a population of 20 in a 55×34 bounding box, moving at speed c/137.

It was claimed to have been "seen briefly in 1974 on a PDP-12 display by Tony Honcho Jarnow" (an anagram of "John Horton Conway"), arising from the ash of a random 128×80 soup, "just before an unfortunate power outage due to tripping on a power cable".[1]

References

  1. ↑ Dave Greene (March 13, 2018). Re: Thread for basic questions (discussion thread) at the ConwayLife.com forums
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