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 4961250. Here we consider a move to be a turn of a disc by any amount.
LINKS
Jaap Scherphuis, Puzzle Pages
CROSSREFS
KEYWORD
nonn,fini,full
AUTHOR
N. J. A. Sloane, Feb 21 2003
STATUS
approved