generation 0: glider
generation 170: glider + r-pentomino + beehive
generation 257: glider + Herschel + beehive
generation 334: 2 gliders + Herschel + beehive
generation 398: 3 gliders + Herschel + beehive
generation 462: 3 gliders + Herschel + beehive
generation 539: 3 gliders + Herschel + beehive
generation 616: 4 gliders + Herschel + beehive
generation 689: 6 gliders + beehive
generation 751: 5 gliders.