#CSYNTH xs13_035iczca1 costs 5 gliders (true).
#CLL state-numbering golly
x = 18, y = 16, rule = B3/S23
15bobo$15b2o$16bo2$obo3bo$b2o3bobo$bo4b2o6$4b2o$3bobo9b2o$5bo8b2o$
16bo!