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A079819 Number of positions that are exactly n moves from the starting position in the Rubik's UFO puzzle. 1
1, 8, 36, 189, 870, 4182, 19502, 89508, 390114, 1623294, 6100151, 16424349, 14501714, 762762, 120 (list; graph; refs; listen; history; text; internal format)
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 39916800. Here we consider a move to be any twist and any disk turn.
LINKS
Jaap Scherphuis, Puzzle Pages
CROSSREFS
Cf. A079820.
Sequence in context: A316107 A054627 A019022 * A238815 A341543 A290357
KEYWORD
nonn,fini,full
AUTHOR
N. J. A. Sloane, Feb 20 2003
STATUS
approved

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Last modified March 28 07:48 EDT 2024. Contains 371235 sequences. (Running on oeis4.)