Rich's p16

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Rich's p16
x = 13, y = 10, rule = B3/S23 4bo3bo$2b2obobob2o$bo3bobo3bo$o3b2ob2o3bo$obo7bobo$bo9bo2$4b2ob2o$3bob obobo$4bo3bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ HEIGHT 500 THUMBSIZE 3 ZOOM 24 GPS 4 ]]
Pattern type Oscillator
Number of cells 34
Bounding box 15 × 14
Period 16 (mod: 8)
Heat 29
Volatility 0.97 | 0.97
Discovered by Rich Holmes
Year of discovery 2016
Not to be confused with Rob's p16.

Rich's p16 is a period-16 oscillator that was found by Rich Holmes on July 5, 2016 using Adam P. Goucher's apgsearch.[1] It consists of a bi-boat interacting with unnamed objects that then create two more boats, but flipped.

It can slightly interact with a rock snake-type object in a non-trivial way.[2] It can also act as a T-nose.

It can act as a filter doubling periods of glider streams that are multiples of 8 but not 16,[3] as well as delete half of the gliders of a stream that is a multiple of 4 but not 8 (in consecutive pairs) to allow two copies to act as a period-quadrupler.[4] Tanner Jacobi and Michael Simkin used these on the day of its discovery to optimise various guns.

Rich's p16 also makes banana sparks, allowing for interesting reactions.

Synthesis

BlinkerSpawn found an 18-glider synthesis of Rich's p16 on the day of its discovery,[5] which Mark Niemiec noticed could be reduced to 17 gliders.[6] Martin Grant improved this synthesis to 16 gliders on July 13.[7] BlinkerSpawn subsequently found a 14-glider synthesis on June 27, 2017,[8] Alex Greason and Goldtiger997 together reduced the synthesis to 12 gliders on October 18, 2019,[9] and Carson Cheng reduced it to 10 gliders on June 9, 2024.[10]

Gallery

x = 26, y = 11, rule = B3/S23 10bo3bo$2b2o5bobobobo5b2o$3bo3b2o2bobo2b2o3bobo$o6b2ob2ob2ob2o$2o4bob o7bobo4bobo$7bo2b2ob2o2bo6b2o$2o$o2bo6b2ob2o6bo$2b2o5bobobobo5b3o$10bo3bo9bo$23b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ HEIGHT 400 THUMBSIZE 2 GPS 4 AUTOSTART ]]
RIch's p16 interacting with an eater 1, aircraft carrier, bipole and beacon.
(click above to open LifeViewer)
Catagoluehere
x = 23, y = 17, rule = B3/S23 14bo3bo$13bobobobo$14b2ob2o2$11bo9bo$10bobo7bobo$10bo3b2ob2o3bo$11bo3b obo3bo$12b2obobob2o$5b2o7bo3bo$5b2o3$5b3o$2o2bob2o$2o2b2o$4b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ HEIGHT 400 THUMBSIZE 2 ZOOM 14 GPS 4 AUTOSTART ]]
Unix on Rich's p16, the former smallest known p48 oscillator by population
(click above to open LifeViewer)
RLE: here Plaintext: here
Catagoluehere
x = 19, y = 22, rule = B3/S23 5b2o$5bo$7bo2$5bobo$4b2o$b2ob2o2$bo4bo$o5bo$2o3bo$2o$10bo3bo$9bobobobo $10b2ob2o2$7bo9bo$6bobo7bobo$6bo3b2ob2o3bo$7bo3bobo3bo$8b2obobob2o$10b o3bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ HEIGHT 400 THUMBSIZE 2 ZOOM 14 GPS 4 AUTOSTART ]]
Blonker on Rich's p16, a p48 oscillator
(click above to open LifeViewer)
RLE: here Plaintext: here
Catagoluehere
x = 13, y = 20, rule = B3/S23 4bo3bo$2b2obobob2o$bo3bobo3bo$o3b2ob2o3bo$obo7bobo$bo9bo2$4b2ob2o$3bob obobo$4bo3bo5$7b2o$5b2o2b2o$5bo4bo$6bo2bo$4bobo2bobo$4b2o4b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ HEIGHT 400 THUMBSIZE 2 ZOOM 14 GPS 4 AUTOSTART ]]
Fumarole on Rich's p16, formerly the smallest known p80 oscillator
(click above to open LifeViewer)
RLE: here Plaintext: here
Catagoluehere
x = 18, y = 13, rule = B3/S23 5b2o$4bo2bo$5bo2bo5b2o$bo6bo4bo$obo3bo2bo4bob2o$b2o3b3o6bobo2$b2o3b3o 6bobo$obo3bo2bo4bob2o$bo6bo4bo$5bo2bo5b2o$4bo2bo$5b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 ZOOM 12 GPS 56 ]]
Tumbler on Rich's p16,[11] the smallest known p112 oscillator by population
(click above to open LifeViewer)
RLE: here Plaintext: here
Catagoluehere


See also

References

  1. Ivan Fomichev (July 5, 2016). Re: Soup search results (discussion thread) at the ConwayLife.com forums
  2. Matthias Merzenich (July 5, 2016). Re: Soup search results (discussion thread) at the ConwayLife.com forums
  3. Tanner Jacobi (July 5, 2016). Re: Soup search results (discussion thread) at the ConwayLife.com forums
  4. Michael Simkin (July 5, 2016). Re: Execution of Old Guns by Variable-Speed Firing Squad (discussion thread) at the ConwayLife.com forums
  5. BlinkerSpawn (July 5, 2016). Re: Soup search results (discussion thread) at the ConwayLife.com forums
  6. Mark Niemiec (July 5, 2016). Re: Soup search results (discussion thread) at the ConwayLife.com forums
  7. Martin Grant (July 13, 2016). Re: Soup search results (discussion thread) at the ConwayLife.com forums
  8. BlinkerSpawn (June 27, 2017). Re: Soup search results (discussion thread) at the ConwayLife.com forums
  9. Goldtiger997 (October 18, 2019). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
  10. carsoncheng (June 9, 2024). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
  11. GUYTU6J (July 27, 2019). Re: Thread for your unsure discoveries (discussion thread) at the ConwayLife.com forums

External links