Buckingham's p13

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Buckingham's p13
x = 25, y = 15, rule = B3/S23 4bo15bo$3bobo13bobo$3bobo13bobo$b3ob2o11b2ob3o$o23bo$b3ob2o11b2ob3o$3b ob2o11b2obo$10bo3bo$11bobo$10b2ob2o$8bo2bobo2bo$7bobobobobobo$7b2o2bob o2b2o$11bobo$12bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ HEIGHT 460 WIDTH 680 THUMBSIZE 3 ZOOM 24 GPS 4 ]]
Pattern type Oscillator
Number of cells 65
Bounding box 25 × 15
Period 13
Mod 13
Heat 10.2
Volatility 0.50
Strict volatility 0.50
Discovered by David Buckingham
Year of discovery 1976

Buckingham's p13 is a period-13 oscillator. It was the first period-13 oscillator to be found, and was discovered by David Buckingham on July 31, 1976.[1] It features two eater 2s used to stabilize another object between them (which is a predecessor of 2 loaves and a bi-boat).

In August 2013, Martin Grant found a 116-glider synthesis for a variant of this oscillator using different eater 2s,[2] and Mark Niemiec made a 113-glider synthesis for the canonical form shown in infobox.[3] Later, goldenratio found a 37-glider synthesis of this oscillator on July 30, 2020.[4] iNoMed reduced this to 32 gliders on April 5, 2021.[5]

x = 14, y = 18, rule = B3/S23 4b2o$4b2o2b2o$9bo$9bob2o$3bo4b2obo$2bobobo6bo$3bo2b8o$3o$o6bo3bo$7bo2b obo$11b2o$3bobo$b3ob2o$o$b3ob2o$3bobo$3bobo$4bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 ZOOM 16 HEIGHT 400 STARTFROM 1 AUTOSTART GPS 4 ]]
Monomer with a known 31G synthesis[6]
(click above to open LifeViewer)
Catagoluehere

See also

References

  1. Dean Hickerson's oscillator stamp collection. Retrieved on March 14, 2020.
  2. Martin Grant (August 17, 2013). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
  3. Mark Niemiec (August 22, 2013). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
  4. goldenratio (July 30, 2020). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
  5. iNoMed (April 5, 2021). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
  6. shinjuku (#4058480218) (April 4, 2023). Job triggered by Adam P. Goucher at GitLab Catagolue project.

External links