Achim's p144

From LifeWiki
Jump to navigation Jump to search
Achim's p144
x = 28, y = 19, rule = B3/S23 2o24b2o$2o24b2o$18b2o$17bo2bo$18b2o$14bo$13bobo$12bo3bo$12bo2bo2$12bo 2bo$11bo3bo$12bobo$13bo$8b2o$7bo2bo$8b2o$2o24b2o$2o24b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ LOOP 144 GPS 24 THUMBSIZE 2 ]]
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 period-144 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 semi-naturally 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


  1. Dean Hickerson's oscillator stamp collection. Retrieved on March 14, 2020.
  2. Ian07 (May 26, 2019). Re: Soup search results (discussion thread) at the forums
  3. Ian07 (December 25, 2019). Re: Synthesising Oscillators (discussion thread) at the forums
  4. GUYTU6J (February 28, 2021). Re: Thread For Your Useless Discoveries (discussion thread) at the forums

External links

  • 42P144.1 at Heinrich Koenig's Game of Life Object Catalogs