p130 shuttle

P130 shuttle is a period-130 shuttle oscillator found by David Eppstein on November 2, 2001, which originally needed several period 5 oscillators for support.[1] David Bell found a reaction between two of the shuttles to produce a p130 glider gun. On 18 November 2017 Tanner Jacobi found that the stable sidesnagger can be used to support the shuttle instead,[2] and this is shown in the infobox. Other ways to stabilise this oscillator using toaster and middleweight volcano are shown below.

<html><div class="rle"><div class="codebox"><div style="display:none;"><code></html>x = 50, y = 40, rule = B3/S23 42bo2b2o$5b2o34bobo2bo$5b2o7bo26bobobo$14bo25b2obob2o$15bo24bo2bo3bo$ 20b2o19bo2b3obo$2o4b2o11bo2bo17bo2b2o3bo$2o3bo2bo11b2o19bo2b4o$5bobo 16b2o14bo2bo$6bo15b4o14b2obob5o$21bo4bo14bobo2bo2bo$3bo17bobobo15bo2bo $2bobo15bo3b2o16b2o$2b2o19bo2$23bo$20bo3b2o$21bobobo$21bo4bo14bo6b2o$ 22b4o14bobob2o2bo$3b2ob2o16b2o14bobobobobo$bo2bobobo11b2o17b2obo3bob2o $b2obo2bo11bo2bo16bo2b2ob2o2bo$4bo15b2o18bo7bo$4b2o34bo7bo$2b2o2bobo 30bo2b2ob2o2bo$bo2bo2b2o30b2obo3bob2o$2b2o36bobobobobo$40bobob2o2bo$ 11b5o25bo6b2o$10bo5bo$8b3o5b3o$7bo11bo$8b4obob3obo$12b3o3bo$7bob2o5bo$ 7b2obobobob2o$11bo2bobo$12b2o2bo$16b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART THUMBSIZE 2 ZOOM 8 WIDTH 600 HEIGHT 480 GPS 26 LOOP 130 ]]<html></code></div></div><canvas width="200" height="300" style="margin-left:1px;"><noscript></html>
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p130 shuttle
<html><div class="rle"><div class="codebox"><div style="display:none;"><code></html>x = 46, y = 27, rule = B3/S23 5b2o32b2o$5b2o32b2o3$20b2o$2o4b2o11bo18b2o4b2o$2o3bo2bo10b3o16bobo3b2o $5bobo16bo13b3o$6bo15b2ob3o$22b2o3bo$3bo17bo20bo$2bobo17bo3bo14bobo$2b 2o18b4o16b2o2$2b2o18b4o16b2o$2bobo17bo3bo14bobo$3bo17bo20bo$22b2o3bo$ 6bo15b2ob3o$5bobo16bo13b3o$2o3bo2bo10b3o16bobo3b2o$2o4b2o11bo18b2o4b2o $20b2o3$5b2o32b2o$5b2o32b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] <nowiki>#C [[ THUMBSIZE 2 Z 10 GPS 13 LOOP 130 ]]</nowiki> <html></code></div></div><canvas width="200" height="300" style="margin-left:1px;"><noscript></html> File:P130shuttle.png <html></noscript></canvas></div></html>
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Pattern type Oscillator
Oscillator type Shuttle
Number of cells 124
Bounding box 46×27
Period 130
Mod 65
Heat 63.57
Volatility 0.96
Strict volatility 0.96
Discovered by David Eppstein
Year of discovery 2001

Jeremy Tan found a 34-glider synthesis of the sidesnagger-supported version of this oscillator on January 6, 2020.[3]

See also

References
  1. Jason Summers' jslife pattern collection. Retrieved on March 14, 2020.
  2. Tanner Jacobi (November 18, 2017). Re: Thread For Your Useless Discoveries (discussion thread) at the ConwayLife.com forums
  3. Jeremy Tan (January 6, 2020). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
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