p165 glider shuttle

p165 glider shuttle
x = 86, y = 70, rule = B3/S23 19bo$18bobo$17bo3bo$17bo3bo$17bo3bo$17bo3bo$17bo3bo$17bo3bo$18bobo$19b o7$4b2o6b2o$2bo4bo2bo4bo$2bo4bo2bo4bo$2bo4bo2bo4bo$4b2o6b2o$34bo2b2o4b 2o2bo$33bo3b3o2b3o3bo$34bo2b2o4b2o2bo7$40b2o$38bobobo$36bobobo$37b2o7$ 31bo2b2o4b2o2bo$30bo3b3o2b3o3bo$31bo2b2o4b2o2bo$65b2o6b2o$63bo4bo2bo4b o$63bo4bo2bo4bo$63bo4bo2bo4bo$65b2o6b2o7$59bo$58bobo$57bo3bo$57bo3bo$ 57bo3bo$57bo3bo$57bo3bo$57bo3bo$58bobo$59bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ HEIGHT 500 WIDTH 600 THUMBSIZE 2 ZOOM 6 GPS 20 ]]
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Pattern type	Oscillator
Oscillator type	Shuttle
Number of cells	126
Bounding box	75 × 64
Period	165
Mod	165
Heat	142.5
Volatility	1.00
Strict volatility	0.40
Discovered by	Robert Wainwright
Year of discovery	1989
Rules Outer-totalistic rules B3/S23 only # of rules 20 = 1 Isotropic rules B3-cy/S23-ck – B34cnz5cikqy6-ik7c/S234cqyz5cer6-ac
Glider synthesis Fewest gliders 20† Catagolue-generated RLE synthesis †Can be constructed with 15 gliders using the reverse caber tosser universal constructor.
Pattern files RLE p165glidershuttle.rle
Identifiers apgcode xp165_yeijizyemgmzye4c4z4evy2ve4w8aczzzyzwskszyivtvycvnvzyi757zzzyzy66a2w4evy2ve4zyzy2464zyzy2d1dzyzy29p9

The p165 glider shuttle is a volatility-1 period-165 shuttle oscillator found by Robert Wainwright in 1989, the first known oscillator of this period. It can be generalized to period 165 + 120 n, and will have^{[citation needed]} an unsimplified strict volatility of (316+210*n)/(792+210*n).

On August 12, 2023, Chris857 reduced the synthesis cost from 24 gliders to 22 gliders.

x = 95, y = 92, rule = B3/S23 79bo$77b2o$78b2o5$80bo$71bobo6bobo$71b2o7b2o$72bo2$55bo$53bobo$54b2o5$ 86bo$86bobo$86b2o6bo$92b2o$70bo22b2o$37bo32bobo$38b2o30b2o$31bo5b2o48b obo$32bo54b2o$30b3o55bo14$83b2o$42bo40bobo$40bobo40bo$41b2o$52b2o$11bo 40bobo$9bobo40bo$10b2o14$6bo55b3o$6b2o54bo$5bobo48b2o5bo$23b2o30b2o$ 22bobo32bo$2o22bo$b2o$o6b2o$6bobo$8bo5$39b2o$39bobo$39bo2$22bo$13b2o7b 2o$12bobo6bobo$14bo5$15b2o$16b2o$15bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ WIDTH 730 HEIGHT 730 THEME Book ZOOM 8 X 0 Y 0 AUTOSTART GPS 30 T 0 PAUSE 1 T 28 PAUSE 5 T 56 PAUSE 1 T 551 PAUSE 2 LOOP 552 ]]

A 24G glider synthesis (click above to open LifeViewer)

External links

• p165 glider shuttle at Adam P. Goucher's Catagolue