Karel's p177
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Karel's p177  
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Pattern type  Oscillator  

Number of cells  104  
Bounding box  62×62  
Period  177  
Mod  177  
Heat  215.3  
Volatility  1.00  
Strict volatility  1.00  
Discovered by  Karel Suhajda  
Year of discovery  2007  
 
 
 

Karel's p177 (or 104P177) is a period 177 oscillator discovered by Karel Suhajda in June 2007.^{[1]} In terms of its minimum population of 104 cells, it is the smallest known period 177 oscillator. It can serve as a 90° or 180° degree reflector in many ways, and with the correct phasing, a glider can pass through it unharmed. On March 21, 2009 Jason Summers found a 24glider synthesis of this oscillator.
Image gallery
References
 ↑ Jason Summers' allosc pattern collection.
External links
 104P177.1 at Heinrich Koenig's Game of Life Object Catalogs
 Karel's p177 at Adam P. Goucher's Catagolue (as recognized by apgsearch < 4.0)
 Karel's p177 at Adam P. Goucher's Catagolue (extended)
Categories:
 Patterns
 Oscillators with 104 cells
 Patterns with 104 cells
 Patterns found by Karel Suhajda
 Patterns found in 2007
 Patterns that can be constructed with 24 gliders
 Oscillators
 Periodic objects with minimum population 104
 Oscillators with period 177
 Oscillators with mod 177
 Oscillators with heat 215
 Oscillators with volatility 1.00
 Oscillators with strict volatility 1.00
 Patterns with complete square symmetry
 Seminatural periodic objects