Also, number of positions that are exactly n moves from the starting position in the Skewb Diamond puzzle.
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 138240.
Table of n, a(n) for n=0..10.
Jaap Scherphuis, Puzzle Pages
Sequence in context: A295375 A081554 A231109 * A079765 A079744 A079746
Adjacent sequences: A079740 A079741 A079742 * A079744 A079745 A079746
N. J. A. Sloane, Feb 20 2003
Edited by N. J. A. Sloane, Jan 17 2009 at the suggestion of R. J. Mathar