x = 48, y = 29, rule = B3678/S34678
15bo$$15bo$$15bo$$15bo$$15bo$$15bo6boo$4b4o4boo3b4o4b10ob4obboo$3bo4b
4obb3o4b4o10bo4boobbo$b14ob6obb23o$b46o$15ob6obb24o$oobo4b4obb3o4b4o
10bo4boobboboo$4b4o4boo3b4o4b10ob4obboo$15bo6boo$$15bo$$15bo$$15bo$$
15bo$$15bo!
A period 240 spark oscillator.
This produces single large sparks at generations 0 and 120.
The sparks can be made into two bit sparks by duplicating the column
containing the spike.
David I. Bell, April 1997
