28P7.2
| 28P7.2 | |||||||||
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| Pattern type | Oscillator | ||||||||
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| Number of cells | 28 | ||||||||
| Bounding box | 12 × 11 | ||||||||
| Period | 7 (mod: Unknown) | ||||||||
| Heat | 5.1 | ||||||||
| Volatility | Unknown | Unknown | ||||||||
| Kinetic symmetry | Unspecified | ||||||||
| Discovered by | Dean Hickerson | ||||||||
| Year of discovery | Unknown | ||||||||
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28P7.2 is an unnamed period 7 oscillator discovered by Dean Hickerson sometime between 1997 and November 24, 1998.[1] In terms of its 28 cells, it is tied with oscillators burloaferimeter and 28P7.1 as the smallest known period 7 oscillator.[2] In September, 2000 Mark Niemiec and Jason Summers found a 22-glider synthesis of this oscillator.[3]
References
- ↑ Dean Hickerson's "New billiard tables" oscillator collection
- ↑ "Class 2 Objects Catalog". Retrieved on March 14, 2009.
- ↑ Jason Summers' jslife pattern collection.