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Search: id:A079819
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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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+0
2
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| 1, 8, 36, 189, 870, 4182, 19502, 89508, 390114, 1623294, 6100151, 16424349, 14501714, 762762, 120
(list; graph; listen)
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OFFSET
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0,2
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COMMENT
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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 39916800. Here we consider a move to be any twist and any disk turn.
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LINKS
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Jaap Scherphuis, Puzzle Pages
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CROSSREFS
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Cf. A079820.
Sequence in context: A164545 A054627 A019022 this_sequence A030112 A001555 A032770
Adjacent sequences: A079816 A079817 A079818 this_sequence A079820 A079821 A079822
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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 (njas(AT)research.att.com), Feb 20 2003
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