#N Blocked p4 t-nose hybrid
#O Matthias Merzenich
#C A sparking period 4 oscillator found by Matthias Merzenich in April 2010.
#C http://conwaylife.com/wiki/Blocked_p4_t-nose_hybrid
x = 21, y = 13, rule = B3/S23
11b3o2$10bo3bo$4bo3bo6bob2o$3bobo12bo$3bobo10b2o$2obobob9o2b3o$2obo13b
o2bo$3bo14b2o$3bobo4bobo$4b2o4b2obo$13bo$13b2o!
