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A079857
Number of positions that are exactly n moves from the starting position in the Rashkey Type 2 puzzle.
1
1, 3, 9, 25, 71, 213, 637, 1871, 5439, 15591, 43853, 119603, 306107, 694105, 1253721, 1481631, 862893, 169269, 6192, 16
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.
CROSSREFS
Cf. A079864.
Sequence in context: A211289 A211292 A291683 * A265940 A309104 A211282
KEYWORD
nonn,fini,full
AUTHOR
N. J. A. Sloane, Feb 21 2003
STATUS
approved