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A075199
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Number of polyominoes with n cells that tile the plane by translation but not by 180-degree rotation (Conway criterion).
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10
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0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 10, 135, 142, 591, 2667, 5291, 6863, 35876, 34819, 161812, 272329, 454465, 651720, 3441853, 3442733
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refs;
listen;
history;
text;
internal format)
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OFFSET
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1,10
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REFERENCES
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Branko Grünbaum and G. C. Shephard, Tilings and Patterns. W. H. Freeman, New York, 1987, Section 9.4.
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LINKS
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CROSSREFS
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Cf. A054359, A075198, A075200, A075201, A075202, A075203, A075204, A075205, A075206, A075208, A075217.
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KEYWORD
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hard,nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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