Mirrored table

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Mirrored table
x = 5, y = 4, rule = B3/S23 2ob2o$bobo$bobo$2ob2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C Still life
Pattern type Strict still life
Number of cells 12
Bounding box 5 × 4
Frequency class 16.2
Discovered by Unknown
Year of discovery Unknown

Mirrored table is a 12-cell still life. It consists of two tables facing each other with one row of dead cells between them.

One of the tables can be moved by two cells to the side, resulting in rotated table.

It is the only 12-cell still life to fit within a 5 × 4 bounding box.

Construction

x = 92, y = 72, rule = B3/S23 81bo$25bo22bo31bo$24bo7bo14bo32b3o$24b3o6b2o12b3o$32b2o$70bobo$56bobo 12b2o$56b2o13bo$57bo$50bo$49b2o15b3o$49bobo16bo$67bo4$bo69b3o$b2o70bo$ obo10b2o57bo$13bobo5b2o$13bo6b2o$22bo2$5bo$6b2o$5b2o4$67b2o2b2o$66bobo b2o$68bo3bo$46bobo$38bo7b2o$39b2o6bo$38b2o2$16bo$15bo$15b3o$19b3o$19bo $20bo$35b2o$36b2o$35bo10b3o$46bo$47bo6$89b3o$89bo$5b2o83bo$6b2o$5bo12$ 35b3o$37bo$36bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THEME Book ZOOM 4 X 0 Y -6 AUTOSTART GPS 12 T 0 PAUSE 3 T 119 PAUSE 2 LOOP 120 ]]
4G syntheses[1][2] (click above to open LifeViewer)

There are known 4-glider syntheses for a mirrored table; a number of known syntheses can be found in Mark Niemiec's database.[2]

The octohash database contains a constellation of two long boats which can serve as a one-glider seed for the mirrored table. The octo3obj database contains five other small constellations of common objects, each of which can also be used as a 1G seed for the mirrored table.

x = 10, y = 9, rule = B3/S23 bo$obo$bobo4b2o$2b2o3b2o$9bo$5bo$4bobo$3bobo$3b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THEME Book ZOOM 12 X 0 Y -2 AUTOSTART GPS 12 T 0 PAUSE 2 T 28 PAUSE 1 LOOP 29 ]]
A 1G seed from the octohash database (click above to open LifeViewer)
x = 59, y = 27, rule = B3/S23 4b2ob2o42bo$4b2ob2o16b2o23bobo$2o9b3o11b2o23bobo$2o9bo18bo13b3o4bo$6b 2o4bo17bo$5bo2bo15b2o4bo$6b2o16b2o27b3o$32b2o10b2ob2o4bo$32b2o10b2ob2o 5bo$24b2o$24bobo$24bo5$11b2o31bo$11b2o31bo$44bo$11b2o$5b3o3b2o35b2o$ 48b2o$2b2o48b2o2b3o$2b2o6b2o40b2o2bo$10bobo34b2o8bo$10bo36b2o3b2o$52b 2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THEME Book ZOOM 8 X 0 Y 0 AUTOSTART GPS 12 T 0 PAUSE 2 T 62 PAUSE 1 LOOP 63 ]]
Five 1G seeds from the octo3obj database (click above to open LifeViewer)

Occurrence

See also: List of common still lifes

Mirrored table is the thirtieth most common still life in Achim Flammenkamp's census, being less common than very long ship but more common than canoe.[3] It is also the thirty-eighth most common object on Adam P. Goucher's Catagolue.[4]

There are 12 results in the octohash database (including one collision with two occurrences[5]), 25 results in the octo3g database, and 191 results in the octo3obj database with this still life occurring in the ash.

See also

References

  1. 2, 3, and 4-glider syntheses at Dean Hickerson's Life page
  2. 2.0 2.1 The 121 twelve-bit still-lifes at Mark D. Niemiec's Life Page (download pattern file: 12/12-25.rle)
  3. Achim Flammenkamp (September 7, 2004). "Most seen natural occurring ash objects in Game of Life". Retrieved on January 15, 2009.
  4. Adam P. Goucher. "Statistics". Catagolue. Retrieved on June 24, 2016.
  5. Headerless RLE: 4bo$3bobo$2bobo$2b2o3$b2o$obo$2o2$bo$2o$obo!

External links