In cellular automata, a replicator is a pattern that produces copies of itself.
In the one-dimensional Rule 90 cellular automaton, every pattern is a replicator.
[1] The same is true in the life-like cellular automaton rule Replicator (B1357/S1357).
[2] On November 23, 2013, Dave Greene built the first replicator in Conway's Game of Life (B3/S23).
[4][better source needed] This computer science article is a stub.