Long bun

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Long bun
x = 5, y = 3, rule = B3/S23 bobo$o2b2o$o2bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
Pattern type Methuselah
Number of cells 7
Bounding box 5 × 3
MCPS 8
Lifespan 53 generations
Final population 12
L/I 7.6
F/I 1.7
F/L 0.226
L/MCPS 6.6
Static symmetry C1
Discovered by Unknown
Year of discovery Unknown

The long bun is a somewhat common evolutionary sequence. While it had appeared in some tables of common sequences, it wasn't recognized as a distinct object until 2022.

Commonness

According to Simon Ekström's census of small evolving patterns[1], the long bun is the 12th most common qualifying sequence, appearing 48239 times on the list with a relative frequency of 0.078, similar to that of the I-heptomino, two-glider octomino, and procrastinator.

Predecessors and naming

The smallest predecessor of the long bun requires 7 cells; two examples are the infobox image and one of the two patterns below. The name "long bun" comes from David Raucci as the other predecessor below.[2] Predecessors typically converge in the generation that is generation 2 of the left object and generation 3 of the right object.

b3o7b2o$o3bo4b2ob2o$4o7bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ HEIGHT 360 WIDTH 600 THUMBSIZE 2 ZOOM 18 GPS 4 ]]
(click above to open LifeViewer)

Use in oscillators

There are multiple oscillators that hassle the long bun. See Long bun hasslers for a complete list.

Miscellaneous

x = 11, y = 5, rule = B3/S23 9b2o$9b2o$2b2o$2ob2o$2bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ HEIGHT 360 WIDTH 600 THUMBSIZE 2 ZOOM 18 GPS 12 ]]
When a long bun hits a block in a specific position, it forms a MWSS. However, this destroys the block
(click above to open LifeViewer)
x = 5, y = 5, rule = B3/S23 3b2o$4bo$4bo$3bo$3o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ HEIGHT 360 WIDTH 600 THUMBSIZE 2 ZOOM 18 GPS 12 ]]
The object shown here that creates an anvil when it hits a boat-bit object (e.g. beacon, snake), by itself, becomes a long bun plus a loaf
(click above to open LifeViewer)


See also

References

  1. ↑ simeks (December 28, 2016). Census of small evolving patterns (discussion thread) at the ConwayLife.com forums
  2. ↑ David Raucci (August 25, 2021). Re: Thread For Your Naming Proposals of Unnamed Patterns (discussion thread) at the ConwayLife.com forums