A for all

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A for all
4b2o4b$3bo2bo3b$3b4o3b$bobo2bobob$o8bo$o8bo$bobo2bobob$3b4o3b$3bo2bo3b $4b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ LOOP 6 THUMBSIZE 2 GPS 3 ]]
Pattern type Oscillator
Number of cells 28
Bounding box 10×10
Period 6
Mod 3
Heat 13.3
Volatility 0.73
Strict volatility 0.73
Discovered by Dean Hickerson
Year of discovery 1993
Not to be confused with Big A.

A for all is a period-6 oscillator found by Dean Hickerson on March 6, 1993.[1] Its claimed 13-glider synthesis was found by David Buckingham in 1993, but was forgotten about and not revealed until August 1995. This synthesis was later found to be invalid due to gliders crossing paths and replaced with a similar 12-glider synthesis which avoids this issue.[2]

See also


  1. Dean Hickerson's oscillator stamp collection. Retrieved on March 14, 2020.
  2. Jeremy Tan (April 18, 2019). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums

External links

  • 28P6.5 at Heinrich Koenig's Game of Life Object Catalogs