x = 18, y = 30, rule = B3678/S34678
bboo$bobobo$b3obo$boo$b3o$bbo$oobo$3o$3bo$bo$boo$bo$bo$3bo$4obo$4o$bob
obbo$bbo5boo$8boo$6bob3obboo$4boobb7o$3bob10obo$bbob13o$bb16o$bbob13o$
3bob10obo$4boobb7o$6bob3obboo$8boo$8boo!
A period 3040 c/2 puffer.
David I. Bell, April 1997
