#N 5x5 infinite growth
#O Paul Callahan
#C The only pattern that fits in a 5x5 box that exhibits infinite grow
#C th.
#C www.conwaylife.com/wiki/index.php?title=Infinite_growth
x = 5, y = 5, rule = 23/3
3obo$o4b$3b2o$b2obo$obobo!