#N Lidka #O Andrzej Okrasinski and David Bell #C A methuselah with lifespan 29055. #C www.conwaylife.com/wiki/index.php?title=Lidka x = 9, y = 15, rule = B3/S23 bo7b$obo6b$bo7b8$8bo$6bobo$5b2obo2$4b3o!