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A079819
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Number of positions that are exactly n moves from the starting position in the Rubik's UFO puzzle.
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1
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1, 8, 36, 189, 870, 4182, 19502, 89508, 390114, 1623294, 6100151, 16424349, 14501714, 762762, 120
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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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 39916800. Here we consider a move to be any twist and any disk turn.
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LINKS
| Jaap Scherphuis, Puzzle Pages
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CROSSREFS
| Cf. A079820.
Sequence in context: A199310 A054627 A019022 * A030112 A001555 A032770
Adjacent sequences: A079816 A079817 A079818 * A079820 A079821 A079822
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KEYWORD
| nonn,fini,full
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), Feb 20 2003
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