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 2079.

Jaap Scherphuis, Puzzle Pages

Cf. A010928, A080560-A080564.

Adjacent sequences: A080559 A080560 A080561 this_sequence A080563 A080564 A080565

Sequence in context: A043140 A043920 A049598 this_sequence A033196 A060621 A058880

nonn,fini,full

njas, Feb 21 2003