#C 52513m.rle
#C Dylan Chen, 16 January 2021
#C
#C This is the longest-lasting asymmetric 16x16 methuselah soup
#C found by apgsearch as of November 2021, stabilizing in 52,513 ticks.
#C The most recent record-holders can be found on Catagolue:
#C https://catagolue.hatsya.com/census/b3s23/C1/methuselah
#C
#C Unlike the situation with diehards (the "messless" category
#C on Catagolue) symmetric methuselahs do not seem to have any
#C particular tendency to last longer than asymmetric ones.
#C
#C Reference:
#C https://conwaylife.com/wiki/52513M
x = 16, y = 16, rule = B3/S23
3o2b2obob2ob3o$2obob3o4bobo$bo2bo2bobob3obo$2bo2b2o3bo2bo$2bo5bobo3b2o
$o4b2o3b3obo$3b2o2bo2bobo2bo$2b4obo2bob2o$2ob2o2b2o5b2o$ob4obo4b3o$o3b
4o2b3o$b10o2b3o$2o3bob3obob3o$b2ob6o3bobo$obo5b4obo$3obobob2o5bo!