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.
There are two starting positions, mirror images of each other. Sequence gives total number of positions at distance n from one of the starting positions.
A puzzle in the Rubik cube family. The total number of distinct positions is 19958400.
LINKS
Jaap Scherphuis, Puzzle Pages
CROSSREFS
KEYWORD
nonn,fini,full
AUTHOR
N. J. A. Sloane, Feb 20 2003
STATUS
approved