sawtooth201 slightly smaller pop-201 sawtooth https://conwaylife.com/wiki/Sawtooth_201 Population 201 at T=0, 1840, 88320, 4152880, 195187200, 9173800240, 431168613120, etc. -- asymptotically approaching (from above) an expansion factor of 47 https://conwaylife.com/forums/viewtopic.php?f=2&t=1590#p18778