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
KEYWORD
nonn
AUTHOR
Boris Golden, Jun 27 2004
STATUS
approved