Two blockers hassling R-pentomino
(Redirected from 47P72)
Jump to navigation
Jump to search
| Two blockers hassling R-pentomino | |||||||||||
| View animated image | |||||||||||
| View static image | |||||||||||
| Pattern type | Oscillator | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Number of cells | 47 | ||||||||||
| Bounding box | 30×19 | ||||||||||
| Period | 72 | ||||||||||
| Mod | 36 | ||||||||||
| Heat | 34.1 | ||||||||||
| Volatility | 0.97 | ||||||||||
| Strict volatility | 0.70 | ||||||||||
| Discovered by | Robert Wainwright | ||||||||||
| Year of discovery | 1990 | ||||||||||
| |||||||||||
| |||||||||||
| |||||||||||
| |||||||||||
Two blockers hassling R-pentomino[1] is a period-72 oscillator. It was the first known period 72 oscillator, discovered by Robert Wainwright in July 1990.[2]
It is made up of two blockers that hassle two blocks and an R-pentomino. It appears in many large guns such as the gunstars and new gun 2.
On January 12, 2016, Tanner Jacobi found a way to replace the blockers with still lifes.[3] Mark D. Niemiec found a 29-glider synthesis for this oscillator on December 1, 2018.[4]
| Still life-supported oscillator, also named as Roseluck[5] (click above to open LifeViewer) RLE: here Plaintext: here |
References
- ↑ Mark D. Niemiec. "Life Oscillators and Pseudo-Oscillators". Retrieved on December 9, 2018.
- ↑ Dean Hickerson's oscillator stamp collection. Retrieved on May 15, 2009.
- ↑ Tanner Jacobi (January 12, 2016). Re: The Hunting of the New Herschel Conduits (discussion thread) at the ConwayLife.com forums
- ↑ Mark D. Niemiec (December 1, 2018). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
- ↑ Jeremy Tan (December 1, 2018). Re: Thread For Your Useless Discoveries (discussion thread) at the ConwayLife.com forums
External links
- 47P72.1 at Heinrich Koenig's Game of Life Object Catalogs
Categories:
- Patterns
- Oscillators with 47 cells
- Patterns with 47 cells
- Patterns found by Robert Wainwright
- Patterns found in 1990
- Patterns that can be constructed with 17 gliders
- Oscillators
- Periodic objects with minimum population 47
- Oscillators with period 72
- Oscillators with mod 36
- Oscillators with heat 34
- Oscillators with volatility 0.97
- Oscillators with strict volatility 0.70
- Flipping oscillators
