Tub test tube baby is a period 2 oscillator. It is similar to test tube baby, but tubs are used to stabilizes the corners.
Tub test tube baby is about the twenty-ninth most common naturally-occurring oscillator in Achim Flammenkamp's census, being less common than the tumbler and more common than trans-beacon on dock.
- ↑ Achim Flammenkamp (September 7, 2004). "Most seen natural occurring ash objects in Game of Life". Retrieved on January 15, 2009.
- 16P2.86 at Heinrich Koenig's Game of Life Object Catalogs