p72 quasishuttle
From LifeWiki
p72 quasishuttle  
View static image  
Pattern type  Oscillator  

Number of cells  84  
Bounding box  37×23  
Period  72  
Mod  72  
Heat  80.6  
Volatility  0.96  
Strict volatility  0.59  
Discovered by  Jason Summers  
Year of discovery  2005  
 
 
 

P72 quasishuttle is a period 72 oscillator (a twin bee shuttle variant) with found by Jason Summers in August 2005. It consists of two Bheptominoes being hassled by two figure eights and two unices. In 18 generations the Bheptominoes are flipped into a centuries and a pair of blocks by unices, which then reacts with the blocks and figure eights to be flipped back into Bheptominoes in 61 generations, but with extra blocks. The extra blocks move the Bheptominoes forward without leaving extra centuries. Although this looks at first sight like a shuttle, it isn't really, because each side of the oscillator uses a different hassling reaction. Like a regular twin bee shuttle, it can reflect gliders.
External links
 p72 quasishuttle at the Life Lexicon
 84P72.1 at Heinrich Koenig's Game of Life Object Catalogs
Categories:
 Patterns
 Oscillators with 84 cells
 Patterns with 84 cells
 Patterns found by Jason Summers
 Patterns found in 2005
 Patterns that can be constructed with 34 gliders
 Oscillators
 Periodic objects with minimum population 84
 Oscillators with period 72
 Oscillators with mod 72
 Oscillators with heat 80
 Oscillators with volatility 0.96
 Oscillators with strict volatility 0.59
 Patterns with bilateral orthogonal symmetry