OFFSET
0,2
COMMENTS
This is different from the sequence giving the number of positions that can be reached in n moves from the start, but which cannot be reached in fewer than n moves (A080601).
A half-turn is considered to be a single move (rather than two moves).
The total number of positions is 901083404981813616.
Relationship with A080601: 243 = 262 - 18 - 1, 3240 = 3502 - 262, 43239 = 46741 - 3502, ...
LINKS
Mark Longridge, God's Algorithm Calculations for Rubik's Cube...
Rokicki, Tomas; God's Algorithm out to 13f*
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Alexander D. Healy, Feb 21 2003
EXTENSIONS
Added a(13). Tomas Rokicki, Jul 25 2009
STATUS
approved