Trans-boat up on long bookend

Trans-boat up on long bookend
x = 5, y = 7, rule = B3/S23 3bo$2bobo$2b2o2$4o$o3bo$3b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 3 ZOOM 21 HEIGHT 400 SUPPRESS ]]
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Pattern type	Strict still life
Number of cells	13
Bounding box	5 × 7
Frequency class	25.7
Static symmetry	n (C1)
Discovered by	Unknown
Year of discovery	Unknown
Rules Outer-totalistic rules B/S23 – B3678/S012345678 # of rules 211 = 2048 Isotropic rules B/S2-n3nr – B2ikn34-ain5-cqr678/S012345678
Glider synthesis Fewest gliders 5 Catagolue-generated RLE synthesis
Pattern files Plaintext transboatuponlongbookend.cells RLE transboatuponlongbookend.rle
Identifiers apgcode xs13_2560uh3 Niemiec ID 13.37 Pentadecathlon ID 13.48

Trans-boat up on long bookend is a 13-cell still life.

Construction

This still life is known to be constructible with 5 gliders.

x = 33, y = 22, rule = B3/S23 7bo13bo$5bobo12bo$6b2o12b3o$obo$b2o$bo2$31b2o$28bo3bo$28b4o2$30b2o$30b obo$31bo5$b2o$obo18bo$2bo17b2o$20bobo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THEME Book ZOOM 10 AUTOSTART GPS 12 T 0 PAUSE 1 T 20 PAUSE 3 T 35 PAUSE 2 LOOP 36 ]] A 5G synthesis (click above to open LifeViewer)

x = 38, y = 37, rule = B3/S23 22bo$21bo$21b3o4$5bo17bo$3bobo17bobo$4b2o17b2o2$29bobo$29b2o$30bo$bo$ 2bo$3o$36b2o$33bo3bo$33b4o2$35b2o$35bobo$36bo12$24b3o$24bo$25bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ HEIGHT 410 THEME Book ZOOM 10 AUTOSTART GPS 12 T 0 PAUSE 1 T 20 PAUSE 3 T 36 PAUSE 1 T 53 PAUSE 2 LOOP 54 ]] A 6G synthesis (click above to open LifeViewer)

x = 43, y = 33, rule = B3/S23 31bo$30bo$30b3o3$5bo5bo$3bobo6bo$4b2o4b3o$30bo$29bo$29b3o3$15bo$16bo$ 14b3o3$41b2o$38bo3bo$38b4o2$40b2o$40bobo$41bo5$28bo$bo25b2o$b2o24bobo$obo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ HEIGHT 400 THEME Book ZOOM 10 AUTOSTART GPS 12 T 0 PAUSE 1 T 20 PAUSE 3 T 30 PAUSE 1 T 36 PAUSE 1 T 57 PAUSE 2 LOOP 58 ]] A 7G synthesis (click above to open LifeViewer)

Occurrence

See also: List of common still lifes, List of still lifes with 13 cells

This is the 34th most common 13-cell still life out of 240.

There is a three-glider collision with this still life in the ash.

Isomers

This still life is comprised of the normally stable boat acting to stabilise the normally unstable long bookend, an induction coil. This is one of four possible isomers, named trans due to the boat extending past the side of the bookend, and up, due to the boat being closer to the dense part of the bookend; the other trans isomer, trans-boat down on long bookend, is farther from the dense part of the bookend, and the other two isomers, cis-boat up on long bookend and cis-boat down on long bookend, do not extend past the sides of the bookend (hence cis).

External links

• Trans-boat up on long bookend at Adam P. Goucher's Catagolue
• 13.48 at Heinrich Koenig's Game of Life Object Catalogs
• The 240 thirteen-bit still-lifes at Mark D. Niemiec's Life Page (download pattern file: 13/13-37.rle)