Monogram

Monogram (or initials[1] or JHC[2]) is a period-4 oscillator that was found by Dean Hickerson on August 11, 1989.[3] It produces some weak sparks which can utilized in e.g. the stabilization of the carnival shuttle.

Monogram
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Pattern type Oscillator
Number of cells 18
Bounding box 7×7
Frequency class 40.9
Period 4
Mod 2
Heat 14
Volatility 0.88
Strict volatility 0.88
Discovered by Dean Hickerson
Year of discovery 1989

It first appeared semi-naturally in September 2014 in a soup found by Josh Ball using apgsearch.[4] It later appeared in an asymmetric soup on May 5, 2015.[5]

References
  1. "Initials". The Life Lexicon. Stephen Silver. Retrieved on June 13, 2009.
  2. "JHC". The Life Lexicon. Stephen Silver. Retrieved on April 30, 2009.
  3. Dean Hickerson's oscillator stamp collection. Retrieved on March 14, 2020.
  4. Josh Ball (September 28, 2014). Re: Soup search results (discussion thread) at the ConwayLife.com forums
  5. Lewis Patterson (May 5, 2015). Re: Soup search results (discussion thread) at the ConwayLife.com forums
  • 18P4.1 at Heinrich Koenig's Game of Life Object Catalogs
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