RLE:21x21maxdensity

x = 21, y = 21, rule = B3/S23 2ob2obob2ob2obob2ob2o$2obob3obobob3obob2o$3bo5bobo5bo$3ob5obob5ob3o$o 2bo4bobo6bo2bo$bobob2obob6obobo$2obob2obo6bobob2o$bobo4b6obobobo$o2b5o 5bobobo2bo$3o5b4obobob4o$3b5o3bobob2o$3o5b2obobo4b3o$o2b4obobobob4o2bo $bobo2bobobobobo2bobo$2obobo2bobobo2bobob2o$bobob4obob4obobo$o2bo6bo6b o2bo$3ob6ob6ob3o$3bo5bobo5bo$2obob3obobob3obob2o$2ob2obob2ob2obob2ob2o !