R2D2
From LifeWiki
R2D2  
View animated image  
View static image  
Pattern type  Oscillator  

Oscillator type  Billiard table  
Number of cells  29  
Bounding box  11×10  
Period  8  
Mod  4  
Heat  2.0  
Volatility  0.22  
Strict volatility  0.22  
Discovered by  Peter Raynham  
Year of discovery  Unknown  
 
 

R2D2 is a period 8 oscillator that was found in the form shown in the infobox at right, but not named, by Peter Raynham in the early 1970s. The name derives from a form with a larger and less symmetric stator discovered later by Noam Elkies in August 1994, shown below.
See also
External links
 R2D2 at the Life Lexicon
 R2D2 at Adam P. Goucher's Catagolue
 29P8.2 at Heinrich Koenig's Game of Life Object Catalogs
Categories:
 Patterns
 Oscillators with 29 cells
 Patterns with 29 cells
 Patterns found by Peter Raynham
 Oscillators
 Periodic objects with minimum population 29
 Billiard tables
 Oscillators with period 8
 Oscillators with mod 4
 Oscillators with heat 2
 Oscillators with volatility 0.22
 Oscillators with strict volatility 0.22
 Patterns with bilateral orthogonal symmetry
 Flipping oscillators