38P7.2 is an unnamed period-7 oscillator discovered by Nicolay Beluchenko on February 17, 2009.[1] It provides four sparks in generation 4 that are useful in creating p7 bumper as well as non-trivial oscillators of higher periods such as snacker on 38P7.2. A variation of this oscillator can be created by displacing one half of the oscillator by two cells.
It first appeared semi-naturally in March 2016.[2] gmc_nxtman found an 18-glider synthesis of this oscillator on August 13, 2017.[3] Goldtiger997 improved this to 14 gliders on February 12, 2018,[4] and Carson Cheng improved it to 12 gliders June 9, 2024.[5]
In March 2018, Josh Ball found a pattern that can be stabilized by copies of 38P7.2 without blocks.[6]
In May 2022, Charity Engine found meatball, in the C2_1 census on Catagolue. It has some of the same utility as 38P7.2, in a slightly smaller package.[7]
Gallery
x = 13, y = 13, rule = B3/S23
4bo$o2bobo$obo2bo2bo$bo2b2obobo2bo$5bobo2bobo$2b2o3b2o2bo$2bo4bo$4bo4b
2o$10bo$bo2bo3bo$2b2o$8bo2bo$9b2o!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ THUMBSIZE 2 ]]
| An alternate form of this oscillator
(click above to open LifeViewer)
RLE: here Plaintext: here
Catagolue: here |
|
x = 24, y = 20, rule = B3/S23
o9bo$3o5b3o$3bo3bo$2b2o3b2o6bo3bo$11bo2bobobobo2bo$5bo5bobo2bobo2bobo$
5bo6bo2b2ob2o2bo$4bobo9bobo$5bo7b2o5b2o$5bo7bo7bo$5bo9bo3bo$5bo$4bobo
5bo2bo3bo2bo$5bo7b2o5b2o$5bo2$2b2o3b2o$3bo3bo$3o5b3o$o9bo!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ THUMBSIZE 2 ]]
| Snacker on 38P7.2, the former smallest known p63 oscillator by population
(click above to open LifeViewer)
RLE: here Plaintext: here
Catagolue: here |
|
See also
References
External links
