OFFSET
0,2
COMMENTS
This is the number of positions that can be reached in n moves from the start, but which cannot be reached in fewer than n moves.
A puzzle in the Rubik cube family. The total number of distinct positions is 6912.
The tips are ignored. The antipode at distance 13 is the position with all 4 free edges flipped.
LINKS
Jaap Scherphuis, Puzzle Pages
CROSSREFS
KEYWORD
nonn,fini,full
AUTHOR
N. J. A. Sloane, Feb 20 2003
STATUS
approved