Achim's p144
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Achim's p144  
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Pattern type  Oscillator  

Number of cells  42  
Bounding box  30×19  
Period  144  
Mod  72  
Heat  31.9  
Volatility  1.00  
Strict volatility  0.95  
Discovered by  Achim Flammenkamp Dean Hickerson David Bell  
Year of discovery  1994  
 
 
 

Achim's p144 is a period144 oscillator that was found (minus all the blocks) on a cylinder of width 22 by Achim Flammenkamp on July 21, 1994. Dean Hickerson reduced it to a finite form using figure eights the same day. The neater finite form shown here  replacing the figure eights with blocks  was found by David Bell on August 8, 1994.^{[1]}
It first appeared seminaturally on May 2, 2019, in a symmetric soup submitted to Catagolue by carybe.^{[2]}
Ian07 reduced the glider synthesis of this oscillator to 13 gliders in December, 2019.^{[3]} This was reduced further to 11 gliders with wwei23's observations on February 28, 2021.^{[4]}
See factory for a use of this oscillator.
See also
 Achim's p4
 Achim's p8
 Achim's p11
 Achim's p16
 Achim's other p16
 New gun 2
 Pseudobarberpole
 Merzenich's p64
References
 ↑ Dean Hickerson's oscillator stamp collection. Retrieved on March 14, 2020.
 ↑ Ian07 (May 26, 2019). Re: Soup search results (discussion thread) at the ConwayLife.com forums
 ↑ Ian07 (December 25, 2019). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
 ↑ GUYTU6J (February 28, 2021). Re: Thread For Your Useless Discoveries (discussion thread) at the ConwayLife.com forums
External links
 Achim's p144 at the Life Lexicon
 42P144.1 at Heinrich Koenig's Game of Life Object Catalogs
Categories:
 Patterns
 Oscillators with 42 cells
 Periodic objects with minimum population 42
 Patterns with 42 cells
 Patterns found by Achim Flammenkamp
 Patterns found by Dean Hickerson
 Patterns found by David Bell
 Patterns found in 1994
 Patterns that can be constructed with 11 gliders
 Oscillators
 Oscillators with period 144
 Oscillators with mod 72
 Oscillators with heat 31
 Oscillators with volatility 1.00
 Oscillators with strict volatility 0.95
 Patterns with 180degree rotation symmetry
 Flipping oscillators
 Seminatural periodic objects