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|Number of cells||28|
|Discovered by||Dean Hickerson|
|Year of discovery||1998|
28P7.1 is an unnamed period-7 oscillator discovered by Dean Hickerson in 1998. In terms of its 28 cells, it is tied with oscillators burloaferimeter, 28P7.2, and 28P7.3 as the smallest known period 7 oscillator.
- "Class 2 Objects Catalog". Retrieved on March 14, 2009.
- 28P7.1 at Heinrich Koenig's Game of Life Object Catalogs