101
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101  
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Pattern type  Oscillator  

Number of cells  64  
Bounding box  18 × 12  
Period  5  
Mod  5  
Heat  17.6  
Volatility  0.46  
Strict volatility  0.46  
Discovered by  Achim Flammenkamp  
Year of discovery  1994  
 
 
 

101 is a period5 oscillator that was found by Achim Flammenkamp on August 19, 1994.^{[1]} The name was suggested by Bill Gosper, noting that one of its phases displays the period in binary.
A 64glider synthesis of this oscillator was found by Entity Valkyrie on January 10, 2020,^{[2]} which was reduced to 51 gliders by Jeremy Tan soon after.^{[3]}
While its sparks are de facto inaccessible, there are contrived configurations of cells that make the domino not completely inaccessible, but it relies on an eater 1 catalysis.
Contrived proof that the domino spark isn't completely inaccessible^{[4]} (click above to open LifeViewer) 
References
 ↑ Dean Hickerson's oscillator stamp collection. Retrieved on March 14, 2020.
 ↑ Entity Valkyrie (January 10, 2020). Re: Soupbased syntheses (discussion thread) at the ConwayLife.com forums
 ↑ Jeremy Tan (January 10, 2020). Re: Soupbased syntheses (discussion thread) at the ConwayLife.com forums
 ↑ Re: Thread for basic questions (discussion thread) at the ConwayLife.com forums
External links
 101 at the Life Lexicon
 101 at Adam P. Goucher's Catagolue
 64P5.2 at Heinrich Koenig's Game of Life Object Catalogs
Categories:
 Patterns
 Oscillators with 64 cells
 Periodic objects with minimum population 64
 Patterns with 64 cells
 Patterns found by Achim Flammenkamp
 Patterns found in 1994
 Patterns that can be constructed with between 50 and 59 gliders
 Oscillators
 Oscillators with period 5
 Oscillators with mod 5
 Oscillators with heat 17
 Oscillators with volatility 0.46
 Oscillators with strict volatility 0.46
 Sparkers
 Sparkers with period 5
 Domino sparkers
 Strong sparkers
 Patterns with rectangular orthogonal symmetry
 Seminatural periodic objects