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A079745
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Number of positions that are exactly n moves from the starting position in the Skewb puzzle.
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0
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1, 8, 48, 288, 1728, 10248, 59304, 315198, 1225483, 1455856, 81028, 90
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0,2
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COMMENTS
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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 3149280.
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REFERENCES
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D. R. Hofstadter, Metamagical Themas, Basic Books, NY, 1985.
Martin Schoenert, posting to Cube Lovers List, Jan 31 1995.
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LINKS
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Table of n, a(n) for n=0..11.
Alan Bawden, Cube Lovers Archive, Part 15
Mark Longridge, God's Algorithm Calculations for Rubik's Cube...
Jaap Scherphuis, Puzzle Pages
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CROSSREFS
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Sequence in context: A079765 A079744 A079746 * A079758 A051823 A037507
Adjacent sequences: A079742 A079743 A079744 * A079746 A079747 A079748
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KEYWORD
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nonn,fini,full
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AUTHOR
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N. J. A. Sloane, Feb 20 2003
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STATUS
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approved
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