p18 bi-block hassler

P18 bi-block hassler (or 43P18) is a period-18 oscillator discovered by Noam Elkies on February 20, 1995.[1] In terms of its 43 cells, it is the smallest known period 18 oscillator.[2][3] The unix on the bottom can be positioned in 2 places.

p18 bi-block hassler
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Pattern type Oscillator
Number of cells 43
Bounding box 21×15
Period 18
Mod 18
Heat 27.4
Volatility 0.85
Strict volatility 0.23
Discovered by Noam Elkies
Year of discovery 1995

It is composed of two copies of unix that are hassling a bi-block, as shown below.

Generation 14 reveals that the oscillator is made up of two copies of unix and a bi-block.
gollark: The Australians have hacked time.
gollark: <:Stick:516249153257340939> <:ironstick:559278476604211200> <:Stick:516249153257340939> <:ironstick:559278476604211200> <:Stick:516249153257340939>
gollark: No! That rabbit will get wet! How could you?!
gollark: The cool <:Stick:516249153257340939> is the Minecraft wooden one though.
gollark: You can turn the cool <:Stick:516249153257340939> into a pickaxe.

References
  1. Dean Hickerson's oscillator stamp collection. Retrieved on June 16, 2009.
  2. "Class 2 Objects Catalog". Retrieved on April 11, 2009.
  3. Jason Summers' all-osc pattern collection. Retrieved on April 12, 2009.
  • 43P18.1 at Heinrich Koenig's Game of Life Object Catalogs
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