p28 pre-pulsar shuttle

From LifeWiki
(Redirected from Pre-pulsar shuttle 28)
Jump to navigation Jump to search
p28 pre-pulsar shuttle
x = 17, y = 22, rule = B3/S23 4b2o$3bo2bo$2bobobo4bo$2bo2bo4bobo$bo9bo3b2o$2bobo10b2o2$8b3o$8bobo$8b 3o2b3o4$2o6b3o2b3o$2o6bobo$8b3o2$15b2o$3b2o6bo3b2o$4bo5bobo$b3o7bo$bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ GPS 4 ZOOM 12 LOOP 28 ]]
Pattern type Oscillator
Oscillator type Shuttle
Number of cells 53
Bounding box 17×22
Period 28
Mod 28
Heat 35.9
Volatility 0.89
Strict volatility 0.83
Discovered by thunk
David Buckingham
Bill Gosper
Year of discovery 2016

p28 pre-pulsar shuttle is a period-28 pre-pulsar shuttle oscillator. It consists of a pre-pulsar being hassled by two 14-generation shuttle mechanisms.

David Buckingham discovered the first period-28 pre-pulsar shuttle, newshuttle, in 1973. The variant shown at right was found by thunk on November 17, 2016,[1] and incorporates shuttle mechanisms by David Buckingham (block and eater), Bill Gosper (mold), and thunk (blocks, blinkers, and tubs). In terms of its 53 cells, this oscillator was tied with mold on 41P7.2 and T-nosed p4 on 28P7.3 as the smallest known non-trivial period-28 oscillator until the discovery of mold on 34P14 shuttle in 2018.


See also


  1. Matthias Merzenich (November 17, 2016). Re: Soup search results (discussion thread) at the ConwayLife.com forums

External links