2011-05-08, 01:50 AM
Just saw this in that other Rubiks Cube thread, and I have no idea how to do this....
Simplified version from what they were doing:
![[Image: 6kch2kd.png]](http://mathurl.com/6kch2kd.png)
How do you find the sum of this? Or prove that it converges / diverges? What happens when you add a third? A fourth...?
Simplified version from what they were doing:
![[Image: 6kch2kd.png]](http://mathurl.com/6kch2kd.png)
How do you find the sum of this? Or prove that it converges / diverges? What happens when you add a third? A fourth...?

