|View static image|
|Number of cells||997|
|Discovered by||Dean Hickerson|
|Year of discovery||2005|
Ruler is a pattern constructed by Dean Hickerson in April 2005 that produces a stream of LWSSes with gaps in it, such that the number of spaceships between successive gaps follows the "ruler function" (sequence A001511 in The On-Line Encyclopedia of Integer Sequences).
The first length-n series of LWSSes is emitted at approximately generation 96*2^n. The pattern uses a Corderman eater puffer found by Paul Tooke in January 2004, a p48 glider gun by Noam Elkies in June 1997, a p8 bouncer by Noam Elkies in September 1998, and a p24 LWSS puffer (source unknown).
|An improvement made in 2019 (540 cells)|
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RLE: here Plaintext: here