Caterer on figure eight is a period 24 oscillator composed of a caterer and a figure eight. In terms of its 24 cells, it is the smallest known period 24 oscillator.
Despite being composed of two oscillators of smaller period (3 and 8 respectively), it is considered non-trivial because it has a single cell that is alive in generation 23 and is dead in its other 23 phases.
Generation 23 reveals the single cell with period 24 (in green)
- ↑ Jason Summers' all-osc pattern collection. Retrieved on April 17, 2009.