two new speeds found!
221-cell smallest glide-symmetric c/6d by bounding box (among the thinnest at 18 half-diagonals) with a forked front, and likewise 33-cell symmetric c/7d (at 13 h.d.), both found with rlifesrc.
Code: Select all
x = 56, y = 46, rule = B34/S35
38b4o$39b3o$37bo3bo$35bobo$36bob2o$34bo2b2o7bo$32bo2b2obo6b3o$32bo2b3o$31bo2bo6b3obobo$42bobobo$32b3o6b2obo5bo$32bo5bobobobo3b2o2bo$30b2obobob2obobo6bob3o$31b2ob2o3b2obo4b5ob2o$29b2ob2obo5bo5b7o$30b4o2b3obo5bobo2b2o2bo$25b4obo8bo11b4o$22bob4o3b3o14bob3obo$22b2obo5b3o17b2o$22bobobob3obo17bo$24b2ob3o$22bobo7bo$19bob2ob2o$20b2o6b3o$17bo3b3obo3bo$19bo5b2o$16bo4b4o3bo$17b3obob2o$15bob2obobo$13bo5bo$13bobobob2o$11b4obobo$9bo2b6o$8b2o6b2o$10bo2bo$8bo4b2o$7b2o2b2obo$5bob2ob3o2bo$5bobo5b2o$5b2o3bo3bo$5b2o3bo$5b2o2b2o$bo3bo2b2o$4bo3bo$o2bob2o$2b5o!
note that lordlouckster found
a 129-cell (2,1)c/6 shared in the "Spaceships in Life-like cellular automata" thread on 2024-08-10.
(see my table in
User:DroneBetter/qfind results#B34/S35_(Dance) for the present forefront of searches by width :-)
edit 2024-11-07:
LaundryPizza03 wrote: December 10th, 2022, 3:06 amc/6o partial at width 8:
Code: Select all
x = 15, y = 146, rule = B34/S35
7bo2$5b2ob2o$3b2obobob2o$4bo2bo2bo$3bo2b3o2bo$2b2o2bobo2b2o$b2obobobobob2o$b2o2b5o2b2o$b2ob3ob3ob2o$4bo5bo$b5o3b5o$2b2obo3bob2o$2b4obob4o$2b3obobob3o$2b2ob2ob2ob2o2$2b4o3b4o$7bo$6b3o$2bob3ob3obo$6b3o$b2obo5bob2o$3b9o$2bo2b2ob2o2bo$5b2ob2o$7bo$3b2o5b2o$2bobobobobobo$2b3ob3ob3o$5b5o$3bob2ob2obo$b2obobobobob2o$3bo7bo$b2o3bobo3b2o$b2o9b2o$6bobo$2b4obob4o$2b2ob2ob2ob2o$2bob2o3b2obo$2b4obob4o$5bo3bo$3b3obob3o$3b2o2bo2b2o$3b2o2bo2b2o$4b3ob3o$2bo4bo4bo$3o3b3o3b3o$b2o3bobo3b2o$3obobobobob3o$2bob3ob3obo$5bobobo$7bo2$4b3ob3o$6b3o2$6b3o$4b2obob2o$3bobo3bobo$3b2obobob2o$3b4ob4o$2bobob3obobo$5bobobo$b4ob3ob4o$bob2o5b2obo$bobobobobobobo$bobobo3bobobo$3b3o3b3o$b2obo2bo2bob2o$bobo2bobo2bobo$bo11bo$o2bo7bo2bo$o2bo7bo2bo$3b2o5b2o$4b2obob2o$bobo3bo3bobo$b2o9b2o$2b2ob2ob2ob2o$2b4o3b4o$3bob5obo$4b2obob2o$7bo$3bo3bo3bo$3b3o3b3o$3bobobobobo$2bob2o3b2obo$3bob2ob2obo$b2o2b2ob2o2b2o$2b4o3b4o$bobo2bobo2bobo$bo11bo$bo5bo5bo$3b9o$b2ob2obob2ob2o$3b2ob3ob2o$bo2bob3obo2bo$2bobo2bo2bobo$2bob3ob3obo$2bo2bobobo2bo$3b3o3b3o$3b2o5b2o$3b3o3b3o$b3o2b3o2b3o2$3o2b2ob2o2b3o$bob2obobob2obo$o2b2obobob2o2bo$bob3obob3obo$b2ob2o3b2ob2o$b2o2b2ob2o2b2o$2bob3ob3obo$b2o4bo4b2o$3bobobobobo$2b3o5b3o$2b2o2bobo2b2o$3b3o3b3o$2bo9bo$2b3obobob3o$bo2bo5bo2bo$bo2b2obob2o2bo$bob2obobob2obo$bo2bo2bo2bo2bo$2bo2b2ob2o2bo$2bob3ob3obo$4b7o$2bob2o3b2obo$2bobo5bobo$o4b2ob2o4bo$2bobobobobobo$5bo3bo$3bob2ob2obo$3bob5obo$4b2obob2o$2b2o3bo3b2o$b5o3b5o$b3o7b3o$b6ob6o$o3b7o3bo$bo2bobobobo2bo$ob3o5b3obo$obo4bo4bobo$bo2b3ob3o2bo$3b3o3b3o$b3o3bo3b3o$2b5ob5o2!
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the only symmetry supporting c/6's at logical width 8 is even; shortest and smallest (by population) w16e:
Code: Select all
x = 14, y = 38, rule = B34/S35
4b6o$5b4o$bob2ob2ob2obo$b2o8b2o$bob2ob2ob2obo$o2b8o2bo$ob2ob4ob2obo$2bob2o2b2obo$3bo2b2o2bo$2bo2bo2bo2bo$2b4o2b4o$4bo4bo$2bo8bo$4bo4bo$bo2b2o2b2o2bo$2bob2o2b2obo$3b2ob2ob2o$4b6o$4bob2obo$6b2o$4bo4bo$5bo2bo$3b2ob2ob2o$3b3o2b3o$3bo6bo$3b2o4b2o$3b2o4b2o$3bo6bo$4b6o$6b2o$6b2o2$6b2o$2b2o6b2o$b2obo4bob2o$o2bob4obo2bo$bo2bo4bo2bo$3b2o4b2o!
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(see also
the first and smallest known c/6 in general at w19o, found by lordlouckster on 2024-08-02)
also, first known 2c/7, the shortest at w19o (no thinner symmetricals exist)
Code: Select all
x = 17, y = 48, rule = B34/S35
6b5o$5b2o3b2o$4bo7bo$4bo2bobo2bo$6bo3bo$2b2ob3ob3ob2o$2b2obo5bob2o$2bo2bo5bo2bo$2b2obo5bob2o$3o11b3o$5b2o3b2o$2bo2bo2bo2bo2bo$7bobo$2b5obob5o$2bo4bobo4bo$o2bo3b3o3bo2bo$2o3b7o3b2o2$3b3ob3ob3o$5b2obob2o$3b3obobob3o$5b2o3b2o$3b2o2bobo2b2o$3bo2b5o2bo$3b2ob2ob2ob2o$3b2obo3bob2o$3bo2bo3bo2bo$3bob2o3b2obo$4bob5obo$3bob2o3b2obo$3b5ob5o$5b2o3b2o$5b2o3b2o$7b3o$6b2ob2o$3b4o3b4o$bobobobobobobobo$bo2bo2b3o2bo2bo$2obobo5bobob2o$bo3b2obob2o3bo$obo2b3ob3o2bobo$2bo2b3ob3o2bo$4b3obob3o$3bob2o3b2obo$4b2o2bo2b2o$4b2o5b2o$6b2ob2o$5bo5bo!
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