# Rule 22

From LifeWiki

Wolfram's **Rule 22** is the 2-state 1-D cellular automaton in which a cell is ON in the next generation if and only if exactly one of its three neighbours is ON in the current generation (a cell being counted as a neighbour of itself). This is the behaviour of Life on a cylinder of width 1.

## External links

- Rule 22 at the Life Lexicon