117P18
x = 39, y = 30, rule = b3/s23
37b2o$8b2o27bob$9bo25bobob$9bobo23b2o2b$10b2o13bobo2bobo6b$14bobo2bobo
2bo2bo2bo2bo5b$13bo2bo2bo2bo2bobo2bobo6b$14bobo2bobo13b2o2b$10b2o23bob
ob$9bobo25bob$9bo27b2o$8b2o29b$23b2o14b$19b2o2b2o14b$18b2o19b$19bo19b$
14b2o23b$14b2o23b$29b2o8b$2o27bo9b$bo25bobo9b$bobo23b2o10b$2b2o13bobo
2bobo14b$6bobo2bobo2bo2bo2bo2bo13b$5bo2bo2bo2bo2bobo2bobo14b$6bobo2bob
o13b2o10b$2b2o23bobo9b$bobo25bo9b$bo27b2o8b$2o!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ AUTOSTART ]]
#C [[ THUMBSIZE 2 GPS 9 ZOOM 10 ]]
View animated image View static image
Pattern type
Oscillator
Number of cells
117
Bounding box
39×30
Period
18
Mod
9
Heat
102.9
Volatility
0.86
Strict volatility
0.10
Discovered by
David Buckingham
Year of discovery
Unknown
117P18 is an unnamed period -18 oscillator . It was the first period 18 oscillator to be found,[note 1] David Buckingham no later than May, 1991 .[1]
It consists of two extended snackers and two blocks used to hassle an R-pentomino .
Gallery
x = 21, y = 28, rule = B3/S23
3bob2o4b2obo$3b2o2bo2bo2b2o$b2o3bo4bo3b2o$o3b2ob4ob2o3bo$b3obobo2bobob
3o$3bobobo2bobobo$6bo4bo$7bo2bo$7bo2bo3$14b2o$10b2o2b2o$9b2o$10bo$5b2o
$5b2o3$10bo2bo$10bo2bo$9bo4bo$6bobobo2bobobo$4b3obobo2bobob3o$3bo3b2ob
4ob2o3bo$4b2o3bo4bo3b2o$6b2o2bo2bo2b2o$6bob2o4b2obo!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ AUTOSTART GPS 9 THUMBLAUNCH THUMBSIZE 2 THEME 6 ZOOM 12 HEIGHT 480 WIDTH 480 ]]
Please enable Javascript to view this LifeViewer.
The similar 113P18LifeViewer )RLE :here Plaintext :here
Notes
↑ A nontrivial period-18 oscillator, such as unix on snacker , could have been constructed from two oscillators of lower period (such as p6 and p9), both of which were known by an earlier date. However, no such LCM oscillators were attested prior to the discovery of this oscillator in 1991.
References External links 117P18.1 at Heinrich Koenig's Game of Life Object Catalogs
