3 7 18 lcm July 8, 2019 16 32 64 128 3 7 18 5 lcm 3 7 18 ka lcm 3 7 18 15 lcm 3 7 18 5 ka lcm 18 16 ka lcm 12 18 20 ka lcm 3 7 lcm 3 7 15 31 series
