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A080617
Consider 3 X 3 X 3 Rubik cube, but only allow the moves M_R, D; sequence gives number of positions that are exactly n moves from the start.
0
1, 4, 10, 24, 58, 140, 338, 816, 1909, 4296, 8893
OFFSET
0,2
CROSSREFS
Cf. A080601, A080614, etc.
Sequence in context: A019494 A192886 A079844 * A080628 A225127 A230954
KEYWORD
nonn,fini
AUTHOR
N. J. A. Sloane, Feb 26 2003
STATUS
approved