T-nosed p4

	T-nosed p4
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Pattern type	Oscillator
Number of cells	31
Bounding box	11 × 12
Period	4 (mod: Unknown)
Heat	15
Volatility	Unknown \| Unknown
Kinetic symmetry	Unspecified
Discovered by	Robert Wainwright
Year of discovery	1989
Pattern files
Plaintext	tnosedp4.cells
RLE	tnosedp4.rle

T-nosed p4 is a period 4 oscillator that was found in October 1989 by Robert Wainwright. It can be used as a filter that deletes every other lightweight spaceship in a stream of period 4n + 2.^[1]

References

↑ "Life Lexicon "F"". Stephen Silver (February 28, 2006). Retrieved on March 15, 2009.