Campfire Sort Mystery Cache

The cache is not at the published coordinates. Solve the following puzzle to determine the actual coordinates.
 

The first few elements of an infinite series are

2, 3, 4, 5, 6, 6, 7, 8, 9, 10, 11, 10, 12...

Let V(n) denote the value of element n (e.g. V(1)=2, V(9)=9). Then the location of the cache is at:

V(67)

V(299)

V(3576)

V(5997)

V(9)

V(1713)

You can validate your puzzle solution with certitude.