Nutter or Genius?

for a 3 toed sloth counting in base 3
base10 -> base3
1- 1
2- 2
3- 3
4-10
5- 11
6- 12
7- 13
8- 20
9- 21
10- 22

as for 2Pi, thats a radian/gradian thing

geometrically Pi is diameter/circumference