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A079762 Number of positions that are exactly n moves from the starting position in the 2 X 2 X 2 Rubik cube puzzle. 4
1, 6, 27, 120, 534, 2256, 8969, 33058, 114149, 360508, 930588, 1350852, 782536, 90280, 276 (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 3674160. A half-turn is considered to be two moves.

LINKS

Table of n, a(n) for n=0..14.

Mark Longridge, God's Algorithm Calculations for Rubik's Cube...

Jaap Scherphuis, Puzzle Pages

CROSSREFS

Cf. A079761, A152169.

Sequence in context: A265943 A080620 A080627 * A175716 A178935 A249792

Adjacent sequences:  A079759 A079760 A079761 * A079763 A079764 A079765

KEYWORD

nonn,fini,full

AUTHOR

N. J. A. Sloane, Feb 20 2003

STATUS

approved

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Last modified July 22 10:45 EDT 2018. Contains 312891 sequences. (Running on oeis4.)