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Search: id:A075200
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| A075200 |
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Number of polyominoes with n cells that tile the plane both by translation and by 180-degree rotation (Conway criterion). |
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11
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| 1, 1, 2, 5, 9, 24, 41, 121, 212, 520, 773, 2577, 3037, 8081, 13954, 32124, 41695, 118784, 150188, 411484, 604304, 1305265, 1954823
(list; graph; listen)
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OFFSET
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1,3
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REFERENCES
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Branko Gruenbaum 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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Joseph Myers, Polyomino tiling
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CROSSREFS
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Cf. A054359, A075198, A075199, A075201, A075202, A075203, A075204, A075205, A075206, A075209, A075218.
Sequence in context: A088356 A047044 A109621 this_sequence A075198 A006405 A136108
Adjacent sequences: A075197 A075198 A075199 this_sequence A075201 A075202 A075203
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KEYWORD
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hard,nonn
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AUTHOR
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Joseph Myers (jsm(AT)polyomino.org.uk), Sep 08 2002
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EXTENSIONS
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More terms from Joseph Myers (jsm(AT)polyomino.org.uk), Nov 04 2003
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