Pseudobarberpole
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Pseudobarberpole  
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Pattern type  Oscillator  

Oscillator type  Muttering moat  
Family  Barberpole  
Number of cells  15  
Bounding box  12×12  
Period  5  
Mod  5  
Heat  16.8  
Volatility  0.82  
Discovered by  Achim Flammenkamp  
Year of discovery  1994  
 
 

The pseudobarberpole (or Achim's p5) is a period 5 oscillator that was found by Achim Flammenkamp on August 22, 1994.^{[1]} With a minimum population of 15 cells, it is the smallest known period 5 oscillator, followed by octagon 2 with 16 cells.^{[2]}^{[3]} On October 23, 2002 Gabriel Nivasch found a period 5 oscillator that consists of four radially symmetrically arranged halves of the pseudobarberpole.^{[4]}
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See also
References
 ↑ Dean Hickerson's oscillator stamp collection.
 ↑ Mark Niemiec (1998). "Life Period5 Oscillators". Retrieved on February 15, 2009.
 ↑ "Class 2 Objects Catalog". Retrieved on March 14, 2009.
 ↑ Jason Summers' allosc pattern collection.
External links
 Pseudobarberpole at Eric Weisstein's Treasure Trove of Life
 Pseudobarberpole at the Life Lexicon
 Pseudobarberpole at Adam P. Goucher's Catagolue
Categories:
 Patterns that can be constructed with 28 gliders
 Patterns
 Oscillators
 Patterns with 15 cells
 Oscillators with 15 cells
 Barberpole variants
 Muttering moats
 Oscillators with period 5
 Oscillators with mod 5
 Oscillators with heat 16
 Oscillators with volatility 0.82
 Patterns found by Achim Flammenkamp
 Patterns found in 1994
 Patterns with diagonal bilateral symmetry