Two pulsar quadrants

Two pulsar quadrants is a period-3 oscillator that was found by David Buckingham in July 1973.[1]

Two pulsar quadrants
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Pattern type Oscillator
Number of cells 18
Bounding box 10×10
Frequency class 40.8
Period 3
Mod 3
Heat 16
Volatility 0.75
Strict volatility 0.75
Discovered by David Buckingham
Year of discovery 1973

A 10-glider synthesis of this oscillator was found by gmc_nxtman on July 12, 2017.[2] This was improved to 9 gliders by gooddogtyson on July 25, 2020.[3]

See also

References
  1. Dean Hickerson's oscillator stamp collection. Retrieved on March 14, 2020.
  2. gmc_nxtman (July 12, 2017). Re: Soup search results (discussion thread) at the ConwayLife.com forums
  3. gooddogtyson (July 25, 2020). Message in #bots-and-mute-this on the Conwaylife Lounge Discord server
  • 18P3.38 at Heinrich Koenig's Game of Life Object Catalogs
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