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A075205
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Number of polyominoes with n cells that tile the plane isohedrally.
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10
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1, 1, 2, 5, 12, 35, 104, 342, 1041, 3026, 6512, 23227, 38238, 108204, 278426, 544635, 825654, 3049903, 3375582, 12108377, 21899125, 36960289, 53317222, 220706640, 271264826
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,3
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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
Eric Weisstein's World of Mathematics, Isohedral Tiling
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CROSSREFS
| Cf. A054359, A075198, A075199, A075200, A075201, A075202, A075203, A075204, A075206, A075214, A075223.
Sequence in context: A148286 A075202 A075203 * A054359 A148287 A036357
Adjacent sequences: A075202 A075203 A075204 * A075206 A075207 A075208
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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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