117P18
117P18 is an unnamed period-18 oscillator. It was the first period 18 oscillator to be found,[note 1] and was discovered by David Buckingham no later than May, 1991.[1]
| 117P18 | |||||||||||
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| Pattern type | Oscillator | ||||||||||
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| Number of cells | 117 | ||||||||||
| Bounding box | 39×30 | ||||||||||
| Period | 18 | ||||||||||
| Mod | 9 | ||||||||||
| Heat | 102.9 | ||||||||||
| Volatility | 0.86 | ||||||||||
| Strict volatility | 0.10 | ||||||||||
| Discovered by | David Buckingham | ||||||||||
| Year of discovery | Unknown | ||||||||||
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It consists of two extended snackers and two blocks used to hassle an R-pentomino.
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3o$3bobobo2bobobo$6bo4bo$7bo2bo$7bo2bo3$14b2o$10b2o2b2o$9b2o$10bo$5b2o
$5b2o3$10bo2bo$10bo2bo$9bo4bo$6bobobo2bobobo$4b3obobo2bobob3o$3bo3b2ob
4ob2o3bo$4b2o3bo4bo3b2o$6b2o2bo2bo2b2o$6bob2o4b2obo!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ AUTOSTART GPS 9 THUMBLAUNCH THUMBSIZE 2 THEME 6 ZOOM 12 HEIGHT 480 WIDTH 480 ]]<html></code></div></div><canvas width="200" height="300" style="margin-left:1px;"><noscript></html>
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<html></noscript></canvas></div></html>Notes
- A period-18 oscillator, unix on snacker, can be constructed from two sparkers (unix and snacker) both of which were definitely known by 1976. However, this type of oscillator is generally considered "boring", and thus not counted despite technically being non-trivial.
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gollark: Yep!
gollark: You COULD get your own HNode™ account and manage it over SSH, HelloBoi.
gollark: HelloBoiMUD™ updated.
gollark: I wrote a somewhat overengineered prime factorization thing for potatOS a while ago.
References
- Dean Hickerson's oscillator stamp collection. Retrieved on April 11, 2009.
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