p72 quasi-shuttle

	p72 quasi-shuttle
	<html><div class="rle"><div class="codebox"><div style="display:none;"><code></html>x = 37, y = 23, rule = B3/S23 30bo$29b2o$28bob2o$b4o22b3o2bo$o4bo23bobobo$o3bobo23bobobo$bo3bobo6b2o 15bo2b3o$7bo5bobo16b2obo$7bo5bo19b2o$4bo2bo5b3o17bo$5b2o2$5b2o$4bo2bo 5b3o17bo$7bo5bo19b2o$7bo5bobo16b2obo$bo3bobo6b2o15bo2b3o$o3bobo23bobob o$o4bo23bobobo$b4o22b3o2bo$28bob2o$29b2o$30bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] <nowiki>#C [[ THUMBSIZE 2 Z 12 GPS 5 LOOP 72 ]]</nowiki> <html></code></div></div><canvas width="200" height="300" style="margin-left:1px;"><noscript></html> File:P72quasishuttle.png <html></noscript></canvas></div></html>
	<html><div class="rle"><div class="codebox"><div style="display:none;"><code></html>x = 37, y = 23, rule = B3/S23 30bo$29b2o$28bob2o$b4o22b3o2bo$o4bo23bobobo$o3bobo23bobobo$bo3bobo6b2o 15bo2b3o$7bo5bobo16b2obo$7bo5bo19b2o$4bo2bo5b3o17bo$5b2o2$5b2o$4bo2bo 5b3o17bo$7bo5bo19b2o$7bo5bobo16b2obo$bo3bobo6b2o15bo2b3o$o3bobo23bobob o$o4bo23bobobo$b4o22b3o2bo$28bob2o$29b2o$30bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] <nowiki>#C [[ THUMBSIZE 2 Z 12 GPS 5 LOOP 72 ]]</nowiki> <html></code></div></div><canvas width="200" height="300" style="margin-left:1px;"><noscript></html> File:P72quasishuttle.png <html></noscript></canvas></div></html>
	View static image
Pattern type	Oscillator
Number of cells	84
Bounding box	37×23
Period	72
Mod	72
Heat	80.6
Volatility	0.96
Strict volatility	0.59
Discovered by	Jason Summers
Year of discovery	2005
Rules
Outer-totalistic rules	B3/S23 only
Important rules	Conway Life
# of rules	20 = 1
Isotropic rules	B3/S23 – B3/S234c5ek6i7e
Glider synthesis
Fewest gliders	26
Catagolue-generated RLE	p72quasishuttle_synth.rle
Pattern files
Plaintext	p72quasishuttle.cells
RLE	p72quasishuttle.rle
Identifiers
apgcode	xp72_gk2gb3y8ggggy1oomewccz11yc168972y0cczoo0gyaomhpe4xgjjz0240dcyh1167w33
Pentadecathlon ID	84P72.1

P72 quasi-shuttle is a period-72 oscillator (a twin bees shuttle variant) with found by Jason Summers on August 19, 2005.[1] It consists of two B-heptominoes being hassled by two figure eights and two unices. In 18 generations the B-heptominoes are flipped into a centuries and a pair of blocks by unices, which then reacts with the blocks and figure eights to be flipped back into B-heptominoes in 61 generations, but with extra blocks. The extra blocks move the B-heptominoes forward without leaving extra centuries. Although this looks at first sight like a shuttle, it isn't really, because each side of the oscillator uses a different hassling reaction. Like a regular twin bees shuttle, it can reflect gliders.

References

Jason Summers' jslife pattern collection. Retrieved on March 14, 2020.

External links

p72 quasi-shuttle at the Life Lexicon

p72 quasi-shuttle at Adam P. Goucher's Catagolue

84P72.1 at Heinrich Koenig's Game of Life Object Catalogs

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[1] Jason Summers' jslife pattern collection. Retrieved on March 14, 2020.