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A075215
Number of anisohedral polyhexes with n cells.
10
0, 0, 0, 0, 0, 1, 4, 36, 73, 258, 501, 999, 1383, 4835, 4685, 10576, 8497, 42156, 12931, 129325, 84555
OFFSET
1,7
COMMENTS
A tiling is isohedral if the symmetries of the tiling act transitively on the tiles; a shape is anisohedral if it tiles the plane, but not isohedrally.
REFERENCES
Branko Grünbaum and G. C. Shephard, Tilings and Patterns. W. H. Freeman, New York, 1987, Section 9.4.
KEYWORD
hard,nonn
AUTHOR
Joseph Myers, Sep 08 2002
EXTENSIONS
More terms from Joseph Myers, Nov 08 2003
More terms from Herman Jamke (hermanjamke(AT)fastmail.fm), May 05 2007
STATUS
approved