Thumb 1

Thumb 1
x = 13, y = 9, rule = B3/S23 3b2o$3bobob2o2b2o$2obo3bobo2bo$2obo3bob3o$3bo3bo$3bobob3o$4bobo3bo$6bo 2b2o$6b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ GPS 3 ZOOM 20 LOOP 9 ]]
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Pattern type	Oscillator
Number of cells	36
Bounding box	13 × 10
Period	9 (mod: 9)
Heat	5.1
Volatility	0.42 | 0.42
Kinetic symmetry	n
Discovered by	Dean Hickerson
Year of discovery	1998
Rules Outer-totalistic rules B3/S23 – B378/S23678 # of rules 25 = 32 Isotropic rules B3/S23-j – B2n34cq5ac6acn78/S234ceijtwy5-eiqr678
Glider synthesis Fewest gliders 72† Catagolue-generated RLE synthesis Uploaded synthesis RLE thumb1_synth.rle †Can be constructed with 15 gliders using the reverse caber tosser universal constructor.
Pattern files Plaintext thumb1.cells RLE thumb1.rle
Identifiers apgcode xp9_039e0o4czolnhlla23zw66 Pentadecathlon ID 36P9.1

Thumb 1 is a period-9 thumb oscillator that was found by Dean Hickerson in October 1998. It is the smallest period-9 sparker by population (the smaller 29P9 is not a sparker).

LCM oscillators

The LCM oscillators below are listed due to being the smallest known ones by population while also satisfying the condition that at least one cell oscillates at the full period. The patterns are shown with visible envelope to highlight interactions between subpatterns.

x = 25, y = 36, rule = B3/S23 16b2o$16bo$14bobo$14b2o4$10bo$2b3o4b3o$11bo2$b2o$3bo18b2o$o23bo$b2o18b o$22b2o2$13bo$13b3o4b3o$14bo4$9b2o$8bobo$8bo$7b2o$15bo3b2o$11b2o7bo$11b o3bob2obob2o$12b3o2b2obob2o$18bobo$14b3obobo$13bo3bobo$13b2o2bo$16b2o ! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 HEIGHT 400 ZOOM 10 GPS 24 THEME Book STARTFROM 342 ]]

78P342 with 42P38 (click above to open LifeViewer) RLE: here Plaintext: here Catagolue: here

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x = 65, y = 34, rule = B3/S23 10b2o$10bo2b2o$8bobo3bo$7bobob3o$7bobo$4b2obob2o2b3o10bo$4b2obob2obo3b o7b3o$7bo7b2o6bo$7b2o3bo10b2o$2o$bo$bobo$2b2o2$20b2o$19b2o$20bo6$44bo$ 44b2o$43b2o2$61b2o$61bobo$63bo$63b2o$40b2o$41bo$38b3o$38bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ GPS 15 ZOOM 8 THUMBSIZE 2 HEIGHT 400 THEME BOOK STARTFROM 387 ]]

74P387 with p129 R-pentomino hassler (click above to open LifeViewer) RLE: here Plaintext: here Catagolue: here

See also

• 94P27.1
• Pentadecathlon on thumb 1
• p6 thumb
• Period-9 sparkers

External links

• Thumb 1 at the Life Lexicon

• Thumb 1 at Adam P. Goucher's Catagolue

• 36P9.1 at Heinrich Koenig's Game of Life Object Catalogs