98P25

98P25 is an unnamed period-25 oscillator discovered by Noam Elkies in October 2002. In terms of minimum population, it was the smallest known period-25 oscillator until the discovery of an improved version of the pattern.[1] The improved version, found by Matthias Merzenich on January 10, 2016, replaces the west and east fumaroles with eater 1s.[2]

98P25
<html><div class="rle"><div class="codebox"><div style="display:none;"><code></html>x = 38, y = 23, rule = B3/S23 9b2o4b2o7b2o$9bobo2bobo7b2o$11bo2bo$10bo4bo$10b2o2b2o$12b2o2$36b2o$2o 24bo6b2o2bo$o2b2o19b2obo5bob2o$b2obo19bo2bo4bo$5bo5b3o10b3o5bo$5bo4bo 2bo19bob2o$b2obo5bob2o19b2o2bo$o2b2o6bo24b2o$2o2$24b2o$22b2o2b2o$22bo 4bo$23bo2bo$12b2o7bobo2bobo$12b2o7b2o4b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] <nowiki>#C [[ GPS 5 ZOOM 10 LOOP 25 ]]</nowiki> <html></code></div></div><canvas width="200" height="300" style="margin-left:1px;"><noscript></html> <html></noscript></canvas></div></html>
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Pattern type Oscillator
Number of cells 98
Bounding box 38×23
Period 25
Mod 25
Heat 84.2
Volatility 0.87
Strict volatility 0.56
Discovered by Noam Elkies
Year of discovery 2002

It works by using four fumaroles and two blocks to hassle two honey farm predecessors.

<html><div class="rle"><div class="codebox"><div style="display:none;"><code></html>x = 32, y = 23, rule = B3/S23 4b2o4b2o9b2o$4bobo2bobo9b2o$6bo2bo$5bo4bo$5b2o2b2o$7b2o21b2o$30bo$2o 26bobo$bo26b2o$bobo18b3o$2b2o16b2ob2o$9bo12bo$7b2ob2o16b2o$7b3o18bobo$ 2b2o26bo$bobo26b2o$bo$2o21b2o$21b2o2b2o$21bo4bo$22bo2bo$9b2o9bobo2bobo $9b2o9b2o4b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART GPS 10 LOOP 25 Y 0 THUMBLAUNCH THUMBSIZE 2 THEME 6 ZOOM 12 HEIGHT 320 ]]<html></code></div></div><canvas width="200" height="300" style="margin-left:1px;"><noscript></html>
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A slightly smaller version (the current record), 88P25.
(click above to open LifeViewer)
RLE: here Plaintext: here

Half of this oscillator can be replaced by a toaster, as shown below.

A related period-25 oscillator that hassles only one honey farm predecessor
RLE: here
The original form of this oscillator used two copies of eater 1 rather than blocks.
RLE: here
gollark: No, it's not exactly that.
gollark: Files which don't actually exist on-disk but are part of the filesystem which is visible.
gollark: The sandbox behind PotatOS - YAFSS - supports "pseudofiles".
gollark: You can also uninstall PotatOS using an uninstall disk or tape.
gollark: The best part is that if you overnest it it crashes with "too long without yielding"!

See also

References
  1. "Class 2 Objects Catalog". Retrieved on April 18, 2009.
  2. Matthias Merzenich (January 10, 2016). Re: Oscillator Discoveries Thread (discussion thread) at the ConwayLife.com forums
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