Eureka (or p30 pre-pulsar shuttle) is a period-30 pre-pulsar shuttle oscillator in which two 15-generation pre-pulsar shuttle mechanisms each composed of two tubs hassle a pre-pulsar. It was found by David Buckingham on August 16, 1980. A slightly different period-30 shuttle can be created by shifting the top half of the shuttle two cells to the left or right (see below). This allows the outermost tubs to optionally be replaced by blocks.
The first known semi-natural appearance of a version of this oscillator was in November 2014 in a soup found by Adam P. Goucher using apgsearch. The monomerized version first occurred in March 2016.
Generation 1 of Eureka, which shows that the object being hassled
is a pre-pulsar
A skewed variant of Eureka with one tub replaced by a blockDownload RLE: click here
- 28P30.1 at Heinrich Koenig's Game of Life Object Catalogs