Harbor

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Harbor
x = 17, y = 17, rule = B3/S23 5b2o3b2o$5bobobobo$6bo3bo2$5b2o3b2o$2o2bobo3bobo2b2o$obob2o5b2obobo$bo 13bo2$bo13bo$obob2o5b2obobo$2o2bobo3bobo2b2o$5b2o3b2o2$6bo3bo$5bobobob o$5b2o3b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ HEIGHT 600 THUMBSIZE 3 ZOOM 24 GPS 2 LOOP 5 ]]
Pattern type Oscillator
Number of cells 64
Bounding box 17 × 17
Period 5 (mod: 5)
Heat 35.2
Volatility 0.64 | 0.64
Kinetic symmetry *c
Discovered by David Buckingham
Year of discovery 1978

Harbor is a period-5 oscillator that was found by David Buckingham on September 17, 1978.[1] It was named by Dean Hickerson. In one phase, it consists of four ships and eight boats.

A 35-glider synthesis of this oscillator can be found in jslife.[2] A 23-glider synthesis was found by yootaa on December 22, 2017.[3] A 16-glider synthesis was found on April 22, 2023.[4]

About 1 in 40000 odd-width eightfold symmetric soups (D8_1) form a harbor in the center.

See also

References

  1. ↑ Dean Hickerson's oscillator stamp collection. Retrieved on March 14, 2020.
  2. ↑ Jason Summers' jslife pattern collection. Retrieved on January 5, 2020.
  3. ↑ yootaa (December 22, 2017). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
  4. ↑ shinjuku (#4159809849) (April 22, 2023). Job triggered by Adam P. Goucher at GitLab Catagolue project.