0,2
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 4079.
Jaap Scherphuis, Puzzle Pages
Cf. A010928, A080560-A080564.
Sequence in context: A110019 A069486 A117313 this_sequence A005147 A007308 A065138
Adjacent sequences: A080560 A080561 A080562 this_sequence A080564 A080565 A080566
nonn,fini,full
N. J. A. Sloane (njas(AT)research.att.com), Feb 21 2003
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