24P4.1

24P4.1
x = 14, y = 6, rule = B3/S23 4bobo2bob3o$3bo2bobobobo$3bo$10bo$bobobobo2bo$3obo2bobo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ TRACKLOOP 4 0 0 GPS 2 THUMBSIZE 2 ]]
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Pattern type	Oscillator
Number of cells	24
Bounding box	14 × 8
Period	4 (mod: 4)
Heat	30
Volatility	1.00 | 0.97
Kinetic symmetry	.k
Discovered by	Dean Hickerson
Year of discovery	1989
Rules Outer-totalistic rules B3/S23 – B378/S02378 # of rules 25 = 32 Isotropic rules B3-kqy/S2-in3-ckqy – B2n34-airty5-iry6-ck78/S0234-aiqry5-cjqr6-e78
Glider synthesis Fewest gliders 10 Catagolue-generated RLE synthesis
Pattern files Plaintext 24p4.1.cells RLE 24p4.1.rle
Identifiers apgcode xp4_g880anziaw5kze5011 Pentadecathlon ID 24P4.1

24P4.1 is a period-4 oscillator discovered by Dean Hickerson in 1989. It has volatility 1. All but two cells are strictly volatile; the cells shown below are the only exceptions.

x = 14, y = 6, rule = LifeSuper 4.2A6.2A$4.3A.ACA.A$3.A2.A.2A2.A$.A2.2A.A2.A$.A.ACA.3A$2A6.2A! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ GPS 4 THUMBSIZE 2 ]]

The two non-strictly volatile cells oscillate at period 2. (click above to open LifeViewer)

Glider synthesis

Main article: Glider synthesis

A 44-glider synthesis for the oscillator was found by Martin Grant in October 2020, and a 10-glider synthesis was found by GUYTU6J in February 2022.

Gallery

x = 49, y = 49, rule = B3/S23 10b2obo21bob2o$14bo3bo11bo3bo$10bo7b2o9b2o7bo$11b2ob2o2bo11bo2b2ob2o$ 15bo2b2ob2o3b2ob2o2bo$14b2o7bobo7b2o$15bo3bo9bo3bo$20bob2ob2obo3$obo 43bobo$o2bo17b3ob3o17bo2bo$3bo41bo$o21bo3bo21bo$bobobo16bo3bo16bobobo$ 3b4o14b3ob3o14b4o3$b4o17bo3bo17b4o$2bobobo14bobobobo14bobobo$7bo13bobo bobo13bo$4bo6bo3bo3b2o2bobo2b2o3bo3bo6bo$4bo2bo3bob3o2bo4bobo4bo2b3obo 3bo2bo$5bobo3bo3bo3b4o3b4o3bo3bo3bobo2$5bobo3bo3bo3b4o3b4o3bo3bo3bobo$ 4bo2bo3bob3o2bo4bobo4bo2b3obo3bo2bo$4bo6bo3bo3b2o2bobo2b2o3bo3bo6bo$7b o13bobobobo13bo$2bobobo14bobobobo14bobobo$b4o17bo3bo17b4o3$3b4o14b3ob 3o14b4o$bobobo16bo3bo16bobobo$o21bo3bo21bo$3bo41bo$o2bo17b3ob3o17bo2bo $obo43bobo3$20bob2ob2obo$15bo3bo9bo3bo$14b2o7bobo7b2o$15bo2b2ob2o3b2ob 2o2bo$11b2ob2o2bo11bo2b2ob2o$10bo7b2o9b2o7bo$14bo3bo11bo3bo$10b2obo21b ob2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 ZOOM 10 WIDTH 600 HEIGHT 600 GPS 6 LOOP 12 ]] An example of 24P4.1 acting as a sparker to support a double carnival shuttle. (click above to open LifeViewer) RLE: here Plaintext: here Catagolue: here

x = 43, y = 20, rule = B3/S23 34b2o5b2o$34bobob2o2bo$36bobob2o$o35bo$3o27b2o2b2obo2b2o$10bo19bo3b2obobo2bo$ bobo5b2ob2o17b2ob2obo2bobo$b2ob2o3b5o16b2o5bo3bo$b2ob2o3b2o19bob5ob3o$3b2o5bo 17b2o3bo2bobo$b2o22b2o2b2ob2o$2ob2o3bobo14b2ob2o2b2ob3o$2ob2o4bo17b3o3bo4bo$ 2bobo27bo3bobo$31b2ob4o$3b3o6b2o$5bo6b3o7b2o6b3ob2o$12b2o7b3o6bo4bo$22b2o11bo bo$36b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 ZOOM 12 WIDTH 600 HEIGHT 600 GPS 12 LOOP 36 ]] One way to support the high-clearance version of the p36 traffic jam. The version with 24P4.1 and caterer doesn't work on the other side, though. (click above to open LifeViewer) Catagolue: here

See also

• Monogram
• Strictly volatile p4

External links

• 24P4.1 at Adam P. Goucher's Catagolue
• The 571 24-bit period 4 oscillators at Mark D. Niemiec's Life Page (download pattern file: 24/24p4-1.rle)
• 24P4.1 at Heinrich Koenig's Game of Life Object Catalogs