p25 prepulsar shuttle
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p25 prepulsar shuttle  
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Pattern type  Oscillator  

Number of cells  83  
Bounding box  21×22  
Period  25  
Mod  25  
Heat  21.0  
Volatility  0.66  
Strict volatility  0.66  
Discovered by  Jason Summers iNoMed  
Year of discovery  2007  
 
 
 

p25 prepulsar shuttle is a period25 shuttle oscillator discovered in its original form by Jason Summers on May 14, 2007.^{[1]} The 83cell variant shown here was found by iNoMed on July 9, 2021.^{[2]} In terms of its minimum population of 83 cells, it is the smallest known period25 oscillator.
Original form of the oscillator, using p5 sparkers (click above to open LifeViewer) RLE: here Plaintext: here 
On July 10, 2021, iNoMed found a glider synthesis for an 84cell version of the oscillator,^{[3]} and another synthesis for the 83cell version the next day.^{[4]}
References
 ↑ Jason Summers' jslife pattern collection. Retrieved on July 9, 2021.
 ↑ iNoMed (July 9, 2021). Re: Oscillator Discussion Thread (discussion thread) at the ConwayLife.com forums
 ↑ iNoMed (July 10, 2021). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
 ↑ iNoMed (July 11, 2021). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
External links
Categories:
 Patterns
 Oscillators with 83 cells
 Periodic objects with minimum population 83
 Patterns with 83 cells
 Patterns found by Jason Summers
 Patterns found by iNoMed
 Patterns found in 2007
 Patterns that can be constructed with between 70 and 79 gliders
 Oscillators
 Oscillators with period 25
 Oscillators with mod 25
 Oscillators with heat 21
 Oscillators with volatility 0.66
 Oscillators with strict volatility 0.66
 Prepulsar shuttle oscillators
 Patterns discovered by pseudonymous users