Dueling banjos

Dueling banjos
x = 20, y = 25, rule = B3/S23 16b2o$16b2o2$16b4o$2o14bo2bo$bo$bobo$2b2o5bo$8b2o$7b2o6b3o$8b2o4bobo$ 14b2o2$14b2o$8b2o4bobo$7b2o6b3o$8b2o$2b2o5bo$bobo$bo$2o14bo2bo$16b4o2$ 16b2o$16b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ AUTOSTART GPS 12 LOOP 24 THUMBSIZE 3 ZOOM 16 HEIGHT 480 ]]
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Pattern type	Oscillator
Number of cells	62
Bounding box	25 × 20
Period	24
Mod	24
Heat	33
Volatility	0.86
Strict volatility	0.86
Discovered by	Apple Bottom
Year of discovery	2019
Rules Outer-totalistic rules B3/S23 – B38/S238 # of rules 22 = 4 Isotropic rules B3-k/S23 – B34e6c7c8/S234cz5e6ikn7e8
Glider synthesis Fewest gliders 19† Catagolue-generated RLE synthesis Uploaded synthesis RLE duelingbanjos_synth.rle †Can be constructed with 15 gliders using the reverse caber tosser universal constructor.
Pattern files RLE duelingbanjos.rle
Identifiers apgcode xp24_cc0f9x21hxh12x9f0cczy3699d303d996zzy0o8a6y56a8o

Dueling banjos is a period 24 oscillator found (in tetramer form, via apgsearch) by Apple Bottom on January 10, 2019.

Matthias Merzenich provided a monomer form that can be cis-in, cis-out or trans. Starting from an initial p24 gun by Tanner Jacobi, he found a way to adjust the sparkers to produce a true period gun slightly smaller than the previous record-holder, p24 gun.

x = 40, y = 31, rule = B3/S23 5b2ob2o4b2o3b2o4b2ob2o$5b2obobo3b2o3b2o3bobob2o$8bo5bobobobo5bo$8bo2bo 11bo2bo$9bo15bo$3bobo7bob2ob2obo$b3ob3o5bo2bobo2bo$o7bo4b3o3b3o7b2o3bo $bob6o19bo2bobobo2bo$b2o4bo20bob2obob4o$3bo3b2o18b2o4bo$2bobo2bobo10bo 4bo3b4ob2ob2o$3bo2bo13bo7bobobobobo2bo$6bo3bo2b2o9bo3bo3bo2bo2b2o$6bo 3bo2b2o9bo6b2o$6bo6bo14b3obo2bo$6bo2bo11bo3bo4bo2b3o$7bo14bo4b2obobo$ 5bobobo10b3o5bobo2b3o$4bobob2o18bobo4bo$4bobo6b5o11bo$5b2o4b3obob3o$ 10bo4bo4bo6bo$10bob2o2bob2obo6bo$11bo2b2o3bobo4b3o$12b2o2bo2bob2o$14bo 4bobo2bo$14b4ob2o2b2o$18bo14bo$16bobo15bo$16b2o14b3o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART GPS 6 LOOP 2400 THUMBLAUNCH THUMBSIZE 2 THEME 6 ZOOM 10 HEIGHT 400 ]]

(click above to open LifeViewer) RLE: here Plaintext: here

Mark Niemiec posted a 19-glider synthesis of the oscillator on January 13th.

External links

• Cis-in-Dueling banjos at Adam P. Goucher's Catagolue

• Cis-out-Dueling banjos at Adam P. Goucher's Catagolue

• Trans-Dueling banjos at Adam P. Goucher's Catagolue

• Dueling banjos (four-fold variant) at Adam P. Goucher's Catagolue