A080621 Consider 3 X 3 X 3 Rubik cube, but only allow the double anti-slice group to act; sequence gives number of positions that are exactly n moves from the start.

1, 9, 51, 265, 864, 1785, 2017, 1008, 144

Offset

0,2

Comments

Not every position can be reached using this restricted set of moves. Total number of positions that can be reached = 6144.

References

Mark Longridge, posting to Cube Lovers List, Apr 14 1995 and May 21 1995.

Links

Table of n, a(n) for n=0..8.

Alan Bawden, Cube Lovers Archive, Part 15

Alan Bawden, Cube Lovers Archive, Part 16

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

Crossrefs

Cf. A080601, A080614, etc.

Sequence in context: A097789 A080624 A125319 * A027218 A155617 A126477

Adjacent sequences: A080618 A080619 A080620 * A080622 A080623 A080624

Keyword

nonn,fini,full

Author

N. J. A. Sloane, Feb 26 2003

Status

approved