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A080616
Consider 3 X 3 X 3 Rubik cube, but only allow the moves T2, F2, R2; sequence gives number of positions that are exactly n moves from the start.
0
1, 3, 6, 12, 24, 48, 93, 180, 315, 489, 604, 522, 250, 42, 3
OFFSET
0,2
COMMENTS
Not every position can be reached using this restricted set of moves. Total number of positions that can be reached = 2592.
CROSSREFS
Cf. A080601, A080614, etc.
Sequence in context: A192871 A002910 A001668 * A090572 A163876 A033893
KEYWORD
nonn,fini,full
AUTHOR
N. J. A. Sloane, Feb 26 2003
STATUS
approved