Rich's p16

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 [[ GPS 4 THUMBSIZE 2 ]]
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Pattern type	Oscillator
Number of cells	34
Bounding box	15 × 14
Period	16 (mod: 8)
Heat	29
Volatility	0.97 | 0.97
Kinetic symmetry	Unspecified
Discovered by	Rich Holmes
Year of discovery	2016
Rules Outer-totalistic rules B3/S23 – B38/S02378 # of rules 24 = 16 Isotropic rules B3-cky/S23-ck – B2n34eqr5kry6cn8/S0234cjy5cenry6ai78
Glider synthesis Fewest gliders 12 Catagolue-generated RLE synthesis Uploaded synthesis RLE richsp16_synth.rle
Pattern files Plaintext richsp16.cells RLE richsp16.rle
Identifiers apgcode xp16_om999e0e999mozx8kc0ck8

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. It consists of a bi-boat interacting with unnamed objects that then create two more boats, but flipped.

It can slightly interact with a snake in a non-trivial way. It can also act as a T-nose due to its orthogonal thumb, although it is not counted among them.

Tanner Jacobi and Michael Simkin used Rich's p16 on the day of its discovery to optimize 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, which Mark Niemiec noticed could be reduced to 17 gliders. Martin Grant improved this synthesis to 16 gliders on July 13. BlinkerSpawn subsequently found a 14-glider synthesis on June 27, 2017, and Alex Greason and Goldtiger997 together reduced the synthesis to 12 gliders on October 18, 2019.

Gallery

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 [[ GPS 4 AUTOSTART THUMBSIZE 2 ]] Unix on Rich's p16, the former smallest known p48 oscillator by population (click above to open LifeViewer) RLE: here Plaintext: here Catagolue: here

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 [[ GPS 4 AUTOSTART THUMBSIZE 2 ]] Blonker on Rich's p16, a p48 oscillator (click above to open LifeViewer) RLE: here Plaintext: here Catagolue: here

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 [[ GPS 4 AUTOSTART THUMBSIZE 2 ]] Fumarole on Rich's p16, formerly the smallest known p80 oscillator. (click above to open LifeViewer) RLE: here Plaintext: here Catagolue: here

See also

• Tumbler
• 34P14 shuttle
• Tumbler on Rich's p16
• Period-48 glider gun
• Period-144 glider gun

External links

• Rich's p16 at the Life Lexicon

• Rich's p16 at Adam P. Goucher's Catagolue