x = 37, y = 21, rule = B3678/S34678
11bo$$11bo$$11bo$17b6o$11bo14b6o$8boo3boobb6o$3b5obb3obboo6b11o$b10ob
14o6b4o$b16o6b13o$11ob14o6b5o$oob5obb3obboo6b11oboo$8boo3boobb6o$11bo
14b6o$17b6o$11bo$$11bo$$11bo!
A period 320 spark oscillator.
This has several large spikes.
Dean Hickerson, April 1997
