A080629 Consider 3 X 3 X 3 Rubik cube, but consider only positions of corners; sequence gives number of positions that are exactly n moves from the start.

1, 18, 243, 2874, 28000, 205416, 1168516, 5402628, 20776176, 45391616, 15139616, 64736

Offset

0,2

Comments

Total number of positions = 88179840. Here a half-turn is counted as a single move.

Links

Table of n, a(n) for n=0..11.

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

Crossrefs

Cf. A080601, A080614, etc.

Sequence in context: A016247 A021064 A181379 * A053540 A080601 A333298

Adjacent sequences: A080626 A080627 A080628 * A080630 A080631 A080632

Keyword

nonn,fini,full

Author

N. J. A. Sloane, Feb 26 2003

Status

approved