Barge with long tail

Barge with long tail
x = 5, y = 7, rule = B3/S23 bo$obo$bobo$2bobo$4bo$3bo$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	11
Bounding box	7 × 5
Frequency class	26.5
Static symmetry	n
Discovered by	Unknown
Year of discovery	Unknown
Rules Outer-totalistic rules B/S23 – B35678/S012345678 # of rules 212 = 4096 Isotropic rules B/S2-in3cn – B2in34-ejkr5678/S012345678
Glider synthesis Fewest gliders 5 Catagolue-generated RLE synthesis Uploaded synthesis RLE bargewithlongtail_synth.rle
Pattern files Plaintext bargewithlongtail.cells RLE bargewithlongtail.rle
Identifiers apgcode xs11_25akg8o Niemiec ID 11.24 Pentadecathlon ID 11.38

Barge with long tail is an 11-cell strict still life.

This still life is comprised of the normally stable barge with a normally unstable long tail attached.

It can be substitutively referred to as the shillelagh with barge, with the pre-block of the shillelagh replaced with a barge, however "barge with long tail" is usually preferred for this object.

Occurrence

See also: List of common still lifes, Most common objects on Catagolue

It is the 32nd most common (i.e. 15th rarest) 11-cell still life out of 46. It is 60 times as rare as the 9-cell tub with long tail, 80 times as rare as the 10-cell boat with long tail, and 1.5 times as common as the 12-cell long boat with long tail.

This still life does not occur in final patterns of collisions in octohash, octo3obj or octo3g databases.

Glider synthesis

Main article: Glider synthesis

This still life is known to be constructible with 5 gliders. Several known syntheses can be found in Mark Niemiec's database. A 5-glider synthesis was found and submitted to Catagolue by Carson Cheng in April 2022.

x = 40, y = 34, rule = B3/S23 25bobo$25b2o$26bo10$35b2o$36bo$35bo$35bobo$36bobo$37bobo$38bo$33b3o$ 33bo$10b2o22bo$11b2o$10bo7$8b2o$3o4bobo$2bo6bo$bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ HEIGHT 380 THEME Book ZOOM 10 X 0 Y 0 AUTOSTART GPS 12 T 0 PAUSE 1 T 32 PAUSE 3 T 67 PAUSE 2 LOOP 68 ]] A 5G synthesis (click above to open LifeViewer)

x = 47, y = 35, rule = B3/S23 4bo$5bo$3b3o27bo$31b2o$32b2o4$14bo$12bobo$13b2o6$42b2o$43bo$42bo$42bob o$43bobo$44bobo$45bo6$3o$2bo31b2o$bo31b2o$35bo$14b2o$13bobo$15bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ HEIGHT 380 THEME Book ZOOM 10 X 0 Y 0 AUTOSTART GPS 12 T 0 PAUSE 1 T 30 PAUSE 3 T 44 PAUSE 1 T 61 PAUSE 2 LOOP 62 ]] A 6G synthesis (click above to open LifeViewer)

External links

• Barge with long tail at Adam P. Goucher's Catagolue
• The 46 eleven-bit still-lifes at Mark D. Niemiec's Life Page (download pattern file: 11/11-24.rle)
• 11.38 at Heinrich Koenig's Game of Life Object Catalogs