Raucci's p38

Raucci's p38
x = 40, y = 12, rule = B3/S23 2b3o30b3o2$o5bo2b2o18b2o2bo5bo$o4b2o4bo16bo4b2o4bo$o11bo14bo11bo$11b2o 14b2o3$5b2o26b2o$5bo28bo$6b3o22b3o$8bo22bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ GPS 12 THUMBSIZE 3 ZOOM 15 WIDTH 740 HEIGHT 400 ]]
View static image
Pattern type	Oscillator
Number of cells	44
Bounding box	42 × 13
Period	38 (mod: 38)
Heat	52.7
Volatility	0.96 | 0.96
Kinetic symmetry	-e
Discovered by	David Raucci Jason Summers
Year of discovery	2022
Rules Outer-totalistic rules B3/S23 – B3/S238 # of rules 21 = 2 Isotropic rules B3/S23 – B36i7c/S234c6i8
Glider synthesis Fewest gliders 14 Catagolue-generated RLE synthesis
Pattern files Plaintext 44p38.cells RLE 44p38.rle
Identifiers apgcode xp38_32acywca23z0888xooxoa6ya6aoxoox888zy17ys7

Raucci's p38 (also called 44P38) is a period-38 oscillator found by David Raucci on January 12, 2022. It is the first finite oscillator of this period to be discovered, and was the smallest until the discovery of 42P38. It consists of two wings being hassled by the traffic stop catalyst. The period-38 wing reaction was originally found in the form of an infinite wick by Jason Summers on August 31, 2000.

x = 88, y = 12, rule = B3/S23 2b3o30b2o14b2o30b3o$36bo14bo$o5bo2b2o18b2o4bo16bo4b2o18b2o2bo5bo$o4b2o 4bo16bo4b2o18b2o4bo16bo4b2o4bo$o11bo14bo32bo14bo11bo$11b2o14b2o30b2o 14b2o3$5b2o74b2o$5bo76bo$6b3o70b3o$8bo70bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 ZOOM 8 WIDTH 800 GPS 12 AUTOSTART ]]

Extended form to show connectivity of the original wick (click above to open LifeViewer) RLE: here Plaintext: here Catagolue: here

The duoplet spark of the oscillator can reflect gliders in at least two ways, as shown by vivi and Kalan Warusa.

A 14-glider synthesis for this oscillator was found on the day of its discovery.

x = 40, y = 55, rule = B3/S23 33bo$31b2o$32b2o11$2b3o30b3o2$o5bo2b2o18b2o2bo5bo$o4b2o4bo16bo4b2o4bo$ o11bo14bo11bo$11b2o14b2o3$5b2o26b2o$5bo28bo$6b3o22b3o$8bo22bo6$32bobo$ 32b2o$33bo11$2b3o30b3o2$o5bo2b2o18b2o2bo5bo$o4b2o4bo16bo4b2o4bo$o11bo 14bo11bo$11b2o14b2o3$5b2o26b2o$5bo28bo$6b3o22b3o$8bo22bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 ZOOM 8 HEIGHT 550 WIDTH 650 GPS 12 AUTOSTART T 0 PAUSE 3 T 76 PAUSE 1 LOOP 77 ]]

Two ways to reflect a glider with the duoplet spark: top is color-preserving, bottom is color-changing (click above to open LifeViewer) RLE: here Plaintext: here

Gallery

x = 46, y = 42, rule = B3/S23 o42bo$3o38b3o$3bo36bo$2b2o36b2o3$13b2o14b2o$12bobo14bobo$b3o2bobo2bo2b o14bo2bo2bobo2b3o$6bobo3b2o16b2o3bobo2$5b2o30b2o$5bo17bo14bo$22bobo2$ 20bo2bobo$13b2o5b2o$13b2o2$18b3o$25b2o$19b2o$25b3o2$31b2o$24b2o5b2o$ 20bobo2bo2$21bobo$7bo14bo17bo$7b2o30b2o2$8bobo3b2o16b2o3bobo$3b3o2bobo 2bo2bo14bo2bo2bobo2b3o$14bobo14bobo$15b2o14b2o3$4b2o36b2o$5bo36bo$2b3o 38b3o$2bo42bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ HEIGHT 400 THUMBSIZE 2 ZOOM 8 GPS 12 ]]

p38 R-pentomino hassler (click above to open LifeViewer) RLE: here Plaintext: here Catagolue: here

x = 42, y = 31, rule = B3/S23 7bo22bo$5b3o22b3o$4bo28bo$4b2o26b2o2$16bo4bo$14b2o6b2o$b3o9b3o6b3o9b3o $bobo7b3o10b3o7bobo$b3o6bo2bobobo2bobobo2bo6b3o$9bo4b3o4b3o4bo$10bobo 12bobo4$19b2o$19bo2bo$19bo2bo$4bo14bo2bo14bo$4b2o14b2o14b2o2$5bobo3b2o 16b2o3bobo$3o2bobo2bo2bo14bo2bo2bobo2b3o$11bobo14bobo$12b2o14b2o3$6b2o 26b2o$6bo28bo$7b3o22b3o$9bo22bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ HEIGHT 400 THUMBSIZE 2 ZOOM 8 GPS 12 ]]

p38 blinker hassler (click above to open LifeViewer) RLE: here Plaintext: here Catagolue: here

x = 44, y = 30, rule = B3/S23 o42bo$3o38b3o$3bo36bo$2b2o36b2o3$13b2o14b2o$12bobo14bobo$b3o2bobo2bo2b o14bo2bo2bobo2b3o$6bobo3b2o16b2o3bobo2$5b2o12bo17b2o$5bo16bo15bo$18bo 4bo$17b2ob2o$17b2ob2o$18bo4bo$5bo16bo15bo$5b2o12bo17b2o2$6bobo3b2o16b 2o3bobo$b3o2bobo2bo2bo14bo2bo2bobo2b3o$12bobo14bobo$13b2o14b2o3$2b2o 36b2o$3bo36bo$3o38b3o$o42bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ HEIGHT 400 THUMBSIZE 2 ZOOM 8 GPS 12 ]]

p76 block hassler (click above to open LifeViewer) RLE: here Plaintext: here Catagolue: here

x = 64, y = 27, rule = B3/S23 26bo32bo$26b2o30b2o2$27bobo3b2o16b2o3bobo$22b3o2bobo2bo2bo14bo2bo2bobo 2b3o$33bobo14bobo$34b2o14b2o2$21b2o$21b2o5b2o26b2o$28bo28bo$21b2o6b3o 22b3o$21b2o8bo22bo3$15bo6bo$2bo6b3ob4o4b4ob3o6bo$bobo6b2obobo6bobob2o 6bobo$o3bo6bo3b2o4b2o3bo6bo3bo$bobo11bo6bo11bobo$2bo10bo2bo4bo2bo10bo$ 15bo6bo2$4b2o26b2o$4bo28bo$5b3o22b3o$7bo22bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ HEIGHT 400 THUMBSIZE 2 ZOOM 8 GPS 12 ]]

p38 bi-block hassler (click above to open LifeViewer) RLE: here Plaintext: here Catagolue: here

x = 62, y = 42, rule = B3/S23 8bo$8bo$8bo$5bo$5bo4b3o2$2b2o4bo$bobo3bobo$bo8bo24bobo10bobo$2o32bo2bo 10bo2bo$10bo22b2obo12bob2o$8b2o15b3o11b2o4b2o11b3o$6bo8b2o24bo2bo$6b2o 7b2o7bo3bo3bob4obobo2bobob4obo3bo3bo$9bo14bo3bo4bo3bob2o4b2obo3bo4bo3b o$10bo27b3o4b3o$15b2o4b2o2bo3bo7b2o8b2o7bo3bo$14bo2bo2bo2bo5bo6b2o10b 2o6bo$7bo3bo2bo2bo2bo2bo4bo7b2o10b2o7bo$12bo2b2o4b2o6b3o22b3o$31bo22bo 2$12bo8b2o$7bo3bo9b2o3$10bo$9bo$6b2o$6bo$8b2o$10bo$2o$bo8bo$bobo3bobo$ 2b2o4bo2$5bo4b3o$5bo$8bo$8bo$8bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ HEIGHT 400 THUMBSIZE 2 ZOOM 8 GPS 12 ]]

p38 two pond and two block hassler (click above to open LifeViewer) RLE: here Plaintext: here Catagolue: here

x = 91, y = 33, rule = B3/S23 49b2o$48bobo$48bo$47b2o2$47b4o$42b3o2bo2bo$41bo3bo3bo$40bo5bo3b3o$40bo 5bo5bo$11bo12bo15bo5bo14bo22bo$8b2o2bo10bo2b2o13bo3bo13b3o22b3o$bo6b3o 14b3o6bo7b3o13bo7b2o10b2o7bo$bo13bo4bo13bo23b2o26b2o$3o7b2ob2obo2bob2o b2o7b3o30bo12bo$8b5obobo2bobob5o42bo4bo$8b3obo3bo2bo3bob3o35b3obo3bo2b o3bob3o$15bo4bo42b5obobo2bobob5o$11bo12bo30b3o7b2ob2obo2bob2ob2o7b3o$ 3b2o26b2o23bo13bo4bo13bo$3bo7b2o10b2o7bo13b3o7bo6b3o14b3o6bo$4b3o22b3o 13bo3bo13b2o2bo10bo2b2o$6bo22bo14bo5bo15bo12bo$38bo5bo5bo$38b3o3bo5bo$ 41bo3bo3bo$40bo2bo2b3o$40b4o2$42b2o$42bo$40bobo$40b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ HEIGHT 400 WIDTH 900 THUMBSIZE 2 ZOOM 8 GPS 12 ]]

p38 honey farm hassler (click above to open LifeViewer) RLE: here Plaintext: here Catagolue: here

LCM oscillators

The LCM oscillators below are the smallest known ones of their period by population while satisfying the condition that at least one cell oscillates at the full period. As 42P38 is two cells smaller, most LCMs requiring a p38 use it instead.

x = 40, y = 21, rule = B3/S23 19b2o4b2o$19bobo2bobo$21bo2bo$20bo4bo$20bo4bo$20bo4bo$22b2o3$2b3o30b3o 2$o5bo2b2o18b2o2bo5bo$o4b2o4bo16bo4b2o4bo$o11bo14bo11bo$11b2o14b2o3$5b 2o26b2o$5bo28bo$6b3o22b3o$8bo22bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ HEIGHT 400 THUMBSIZE 2 ZOOM 12 THEME Book GPS 12 STARTFROM 190 ]]

62P190 with fumarole (click above to open LifeViewer) RLE: here Plaintext: here Catagolue: here

External links

• Raucci's p38 at Adam P. Goucher's Catagolue
• 46P38 at Adam P. Goucher's Catagolue (trans form; does not produce duoplet sparks)