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|Number of cells||17|
|Discovered by||Stephen Silver|
|Year of discovery||2000|
Silver's p5 is a period-5 oscillator that was found by Stephen Silver on February 17, 2000. In terms of its 17 cells it is the third smallest known period 5 oscillator, after pseudo-barberpole and octagon 2. As it has no spark, it appears upon first glance to be useless. Nonetheless, in March 2000, David Eppstein found a way to use it to reduce the size of Noam Elkies' period 5 reflector. In May 2007 Mark Niemiec found a 14-glider synthesis of a variation of this oscillator that uses an aircraft carrier rather than a snake for stabilization.
- 17P5.2 at Heinrich Koenig's Game of Life Object Catalogs