OFFSET
1,2
COMMENTS
The tiling of bricks is topologically the same as that by regular hexagons and this sequence can also be seen as counting polyhexes where two polyhexes are equivalent iff they are related by a symmetry that is also a symmetry of the tiling by bricks.
REFERENCES
Other references on polyforms are: www.mathpuzzle.com, Solomon W. Golomb, Ed Pegg, Eric Weisstein, David A. Klarner (Packing rectangles) and Michael Reid [These references should be expanded! - N. J. A. Sloane]
LINKS
Brendan Owen and Livio Zucca, Polyform generation
Brendan Owen and Livio Zucca, The 16 polybricks of order 4
N. J. A. Sloane, The polybricks of orders 1, 2 and 3
CROSSREFS
KEYWORD
nonn,nice
AUTHOR
Warren Power (wjpnply(AT)hotmail.com), Oct 21 2000
EXTENSIONS
More terms from Don Reble, Nov 01 2001
Corrected and extended by Joseph Myers, Sep 21 2002
STATUS
approved