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A075204
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Number of polyominoes with n cells that tile the plane isohedrally but not by translation or by 180-degree rotation (Conway criterion).
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10
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0, 0, 0, 0, 0, 0, 3, 22, 80, 323, 338, 3322, 3178, 13590, 43045, 76881, 48781, 551137, 93592, 2190553, 3163376, 3542450, 1065943, 39341178, 31694933
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,7
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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.
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REFERENCES
| Branko Gruenbaum and G. C. Shephard, Tilings and Patterns. W. H. Freeman, New York, 1987, Section 9.4.
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LINKS
| Joseph Myers, Polyomino tiling
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CROSSREFS
| Cf. A054359, A075198, A075199, A075200, A075201, A075202, A075203, A075205, A075206, A075213, A075222.
Sequence in context: A005288 A143166 A055550 * A106150 A135836 A004305
Adjacent sequences: A075201 A075202 A075203 * A075205 A075206 A075207
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KEYWORD
| hard,nonn
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AUTHOR
| Joseph Myers (jsm(AT)polyomino.org.uk), Sep 08 2002
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EXTENSIONS
| More terms from Joseph Myers (jsm(AT)polyomino.org.uk), Nov 04 2003
a(24) and a(25) from Joseph Myers (jsm(AT)polyomino.org.uk), Nov 17 2010
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