#N Gliders by the dozen
#C A methuselah with lifespan 184 that emits exactly 12 gliders over the course of its evolution.
#C www.conwaylife.com/wiki/index.php?title=Gliders_by_the_dozen
x = 5, y = 3, rule = 23/3
2o2bo$o3bo$o2b2o!