28P7.2

28P7.2 is an unnamed period-7 oscillator discovered by Dean Hickerson in 1998. In terms of its 28 cells, it is tied with oscillators burloaferimeter, 28P7.1, and 28P7.3 as the smallest known period 7 oscillator.[1] In September, 2000 Mark Niemiec and Jason Summers found a 22-glider synthesis of this oscillator.[2]

28P7.2
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Pattern type Oscillator
Number of cells 28
Bounding box 12×11
Period 7
Mod 7
Heat 5.1
Volatility 0.42
Strict volatility 0.42
Discovered by Dean Hickerson
Year of discovery 1998

A stator variant of this oscillator appeared semi-naturally on October 28, 2018, in a symmetric soup submitted to Catagolue by carybe.[3]

See also

References
  1. "Class 2 Objects Catalog". Retrieved on March 14, 2009.
  2. Jason Summers' jslife pattern collection.
  3. Dannyu NDos (January 6, 2019). Re: Soup search results (discussion thread) at the ConwayLife.com forums
  • 28P7.2 at Heinrich Koenig's Game of Life Object Catalogs
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