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A096310
Number of non-isomorphic positions reached for the first time in exactly n quarter-turns exactly on a 3 X 3 X 3 Rubik's Cube.
0
1, 1, 5, 17, 130, 1031, 9393, 86183
OFFSET
0,3
COMMENTS
There are at most 96 positions which are in the same isomorphic class.
REFERENCES
Boris Golden, TIPE on Rubik's Cube (a TIPE is a French short research work done by students for competitive examinations).
EXAMPLE
a(1) = 1 because the 12 quarter turns are isomorphic.
CROSSREFS
Sequence in context: A365295 A012263 A076448 * A236530 A249520 A248661
KEYWORD
nonn
AUTHOR
Boris Golden, Jun 27 2004
STATUS
approved