Herschel descendant

A Herschel descendant is a common active pattern occurring at generation 21 of a Herschel's evolution. Beside it contains another Herschel descendant, after it produces the first natural block:

x = 31, y = 5, rule = B3/S23 b2o20b2o3b2o$o2bo19bobo2bobo$3b2o20bo4bo$2b2o20bo2bo2bo$2bo24b3o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 ZOOM 16 WIDTH 720 HEIGHT 480 GPS 10 AUTOSTART PAUSE 4 T 100 ZOOM 8 LOOP 150 ]]

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

There are other evolutionary paths leading to the same pattern, including the modification of a B-heptomino implied by generation 21 of a Herschel.

On its own

There are oscillators that hassle some number of instances of Herschel descendant:

x = 34, y = 24, rule = B3/S23 7b2obo$7bob2o$11b2o$8b2o3bo18b2o$6b3ob4o14b2o2bo$5bo21bo2bobo$6b3ob2o 15b2o2bo$8bob2o11bo$21b3o2b2o$23bo2b2obo$27bobo$4bo11b2o11bo$4bo11bo2b 2o8bo$4bobo10bo2bo$4bob2o2bo6b3o$6b2o2b3o$10bo11b2obo$2bo2b2o15b2ob3o$ bobo2bo21bo$bo2b2o14b4ob3o$2o18bo3b2o$21b2o$23b2obo$23bob2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ GPS 12 THUMBSIZE 2 ]]

p24 found by Nico Brown on May 6, 2023 (click above to open LifeViewer)

x = 43, y = 42, rule = B3/S23 14bo2bo$13bo4bo$12bo5bo$11b2ob2o$10bo7bo$9bo2b3obobo$10b3obob2o2$10b3o bob2o$9bo2b3obobo$10bo7bo18b2o$11b2ob2o20b4o$12bo5bo16b2ob3o$13bo4bo 15b3o3bo$14bo2bo14bobo5b3o$31bob2ob3obo$32b2o3b2o$4b2o$3b4o25b2o3b2o$ 2b3ob2o11b2o10bob2ob3obo$2bo3b3o10bo2bo9bobo5b3o$3o5bobo9bo2bo10b3o3bo $2bob3ob2obo10b2o11b2ob3o$4b2o3b2o25b4o$37b2o$4b2o3b2o$2bob3ob2obo$3o 5bobo14bo2bo$2bo3b3o15bo4bo$2b3ob2o16bo5bo$3b4o20b2ob2o$4b2o18bo7bo$ 24bobob3o2bo$25b2obob3o2$25b2obob3o$24bobob3o2bo$24bo7bo$27b2ob2o$24bo 5bo$24bo4bo$25bo2bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ GPS 32 THUMBSIZE 2 ]]

p64 found by Carson Cheng on October 4, 2022 (click above to open LifeViewer)

One index fossil in even fourfold rotational symmetry (C4_4) is a Herschel descendant and a block that forms a 1376-tick diehard, bumping up the messless_13h and messless_14h bins in Catagolue.

x = 38, y = 38, rule = B3/S23 24bo$23b3o$22bo2b2o$22b2o8b2o$3b2o27b2o$3b2o6$2bo$b2o$2o$bobo$2b2o7$ 34b2o$34bobo$36b2o$35b2o$35bo6$33b2o$4b2o27b2o$4b2o8b2o$11b2o2bo$12b3o $13bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ GPS 60 THUMBSIZE 2 ]]

Diehard, 1376 generations (click above to open LifeViewer)

External links

• Herschel descendant at the Life Lexicon