128P10.2
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| 128P10.2 | |||||||||
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| Pattern type | Oscillator | ||||||||
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| Number of cells | 128 | ||||||||
| Bounding box | 35 × 35 | ||||||||
| Period | 10 | ||||||||
| Mod | 10 | ||||||||
| Heat | 87.2 | ||||||||
| Volatility | 0.92 | ||||||||
| Strict volatility | 0.90 | ||||||||
| Discovered by | Nicolay Beluchenko | ||||||||
| Year of discovery | 2009 | ||||||||
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128P10.2 is an unnamed period-10 quasi-shuttle oscillator.[1] It was found by Nicolay Beluchenko on March 26, 2009.[2] It is not considered a true shuttle because the active region does not flip halfway through the oscillator's period.
This oscillator first appeared semi-naturally in April 2016, in a symmetric soup submitted to Catagolue.[3] On October 27, 2020, a glider synthesis of this oscillator (or, more specifically, a slight variant) was completed, following intermittent efforts by various users dating back to July.[4] Since then, about 1 in 5.5 billion eightfold symmetric soups with odd symmetry (D8_1) form a 128P10.2 with the blocks in one of two possible positions.
References
- ↑ Jason Summers' pattern collections.
- ↑ New Oscillators at Game of Life News. Posted by Heinrich Koenig on April 14, 2009.
- ↑ praosylen (April 2, 2016). Re: Soup search results (discussion thread) at the ConwayLife.com forums
- ↑ GUYTU6J (October 27, 2020). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
External links
- 128P10.2 at Heinrich Koenig's Game of Life Object Catalogs
Categories:
- Patterns
- Oscillators with between 120 and 129 cells
- Periodic objects with minimum population between 120 and 129
- Patterns with between 120 and 129 cells
- Patterns found by Nicolay Beluchenko
- Patterns found in 2009
- Patterns that can be constructed with between 60 and 69 gliders
- Oscillators
- Oscillators with period 10
- Oscillators with mod 10
- Oscillators with heat 87
- Oscillators with volatility 0.92
- Oscillators with strict volatility 0.90
- Patterns with complete square symmetry
- Sparkers
- Sparkers with period 10
- Domino sparkers
- Moderate sparkers
- Unnamed periodic objects
- Semi-natural periodic objects