#N quadratic-replicator-puffer.rle
#O Connor Steppie, 4 December 2018
#C
#C This pattern creates a trail of quadratic replicators behind
#C itself, which interact to create a downward-moving fractal
#C pattern.
#C
#C Reference:
#C https://conwaylife.com/forums/viewtopic.php?p=66178#p66178
x = 24, y = 7, rule = B2a3ir5aik7e/S2k4z
bo20bo$2o20b2o4$7bo8bo$6b2o8b2o!