!Name: 43P18 !The smallest known period 18 oscillator. !www.conwaylife.com/wiki/index.php?title=43P18 .OO .OO .OO .O.............O..O O.O............O .O.O.OOO......O....O ..O.OOOO.....O.O..OO ...O.......OO.O .......O ......O....O..O .......O.....OO .......OO .......OO