1 beacon

	1 beacon
	<a href="/wiki/File:1beacon.png" class="image" title="1 beacon image"><img alt="1 beacon image" src="/w/images/4/45/1beacon.png" decoding="async" width="146" height="146" /></a>
	<a href="/wiki/File:1beacon.png" class="image" title="1 beacon image"><img alt="1 beacon image" src="/w/images/4/45/1beacon.png" decoding="async" width="146" height="146" /></a>
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Pattern type	Oscillator
Family	Beacon
Number of cells	18
Bounding box	7 × 7
Period	2
Mod	Unknown
Heat	2
Volatility	0.10
Strict volatility	0.10
Discovered by	Unknown
Year of discovery	Unknown
Rules
Outer-totalistic rules	B3/S23 – B378/S01235678
# of rules	28 = 256
Glider synthesis
Fewest gliders	10
Uploaded synthesis RLE	1beacon_synth.rle
Pattern files
Plaintext	1beacon.cells
RLE	1beacon.rle

1 beacon is a period 2 oscillator.

Commonness

1 beacon is about the thirty-second most common naturally-occurring oscillator in Achim Flammenkamp's census, being slightly less common than the cis-beacon up and long hook , approximately as common as the cis-beacon and cap, and more common than 20P2.^[1]

In October 2014, Ivan Fomichev found an 8-glider synthesis for this pattern based on a soup from Adam P. Goucher's apgsearch script.^[2]