#N three-way-replicator.rle
#O LaundryPizza03, 26 December 2017
#C
#C A rare square-grid example of a replicator that splits into
#C three identical copies instead of two or four, tracing out
#C a Sierpinski triangle in the process.
#C The envelope at t=2^n somewhat resembles Rule 150.
#C
#C Reference:
#C https://conwaylife.com/forums/viewtopic.php?p=54221#p54221
x = 3, y = 2, rule = B2a3iry4y5aiky7e/S2k4cz
3o$obo!