p143 Bandersnatch loop

p143 Bandersnatch loop
x = 46, y = 56, rule = B3/S23 15bo$14bobo$14bobo7b2o$12b3ob2o6b2o$11bo19b2o$12b3ob2o13b2o$14bob2o4$27bo$26b obo$25bo2bo$26b2o9b2o$37b2o2$42bo$15b2o7b2o14b3o$15b2o6bobo13bo$25bo13b2o$9b 2o34bo$9b2o32b3o$42bo$3b2o37b2o$3b2o4b2o$9b2o5$35b2o$35b2o4b2o$2b2o37b2o$3bo$ 3o32b2o$o34b2o$5b2o13bo$6bo13bobo6b2o$3b3o14b2o7b2o$3bo2$7b2o$7b2o9b2o$17bo2b o$17bobo$18bo4$28b2obo$13b2o13b2ob3o$13b2o19bo$20b2o6b2ob3o$20b2o7bobo$29bobo $30bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ GPS 13 ZOOM 5 LOOP 143 ]]
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Pattern type	Oscillator
Number of cells	144
Bounding box	46 × 56
Period	143 (mod: 143)
Heat	60.5
Volatility	0.94 | 0.94
Kinetic symmetry	Unspecified
Discovered by	Sphenocorona iNoMed
Year of discovery	2020
Rules Outer-totalistic rules B3/S23 only # of rules 20 = 1 Isotropic rules B3/S23 – B3/S236i
Glider synthesis Fewest gliders 58† Catagolue-generated RLE synthesis Uploaded synthesis RLE p143bandersnatchloop_synth.rle †Can be constructed with 15 gliders using the reverse caber tosser universal constructor.
Pattern files Plaintext p143bandersnatchloop.cells RLE p143bandersnatchloop.rle
Identifiers apgcode xp143_y7g88e1e8y2ccy1ggzy8113033y911zyl4a96y4oozybccy284sy9ok46zxooy0jjyrca23zy511zggkcyrjjy066z1wo8a6y9e84y2ccy011zy366y4o4k8zye1y5gg0gzy933y1ccy25t0t552zyq1

The p143 Bandersnatch loop is a period-143 oscillator found by Sphenocorona on June 10, 2020. Originally stabilized using two copies of 66P13, a smaller version using only still lifes as stabilization was found by iNoMed on January 3, 2022. A 58-glider synthesis of this latter version was found later the same day.

Also on January 3, Entity Valkyrie found a stabilization that doubles the overall period of the oscillator to 286. A glider synthesis for this version was found on February 19.

External links

• p143 Bandersnatch loop with 66P13 at Adam P. Goucher's Catagolue (extended)

• p143 Bandersnatch loop with stable supports at Adam P. Goucher's Catagolue

• p143 Bandersnatch loop with period-doubling reaction at Adam P. Goucher's Catagolue