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Search: id:A075215
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| A075215 |
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Number of anisohedral polyhexes with n cells. |
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+0
11
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| 0, 0, 0, 0, 0, 1, 4, 36, 73, 258, 501, 999, 1383, 4835, 4685, 10576, 8497, 42156, 12931, 129325, 84555
(list; graph; listen)
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OFFSET
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1,7
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COMMENT
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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
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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, Polyhex tiling
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CROSSREFS
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Cf. A070766, A075207, A075208, A075209, A075210, A075211, A075212, A075213, A075214, A075206, A075224.
Sequence in context: A053939 A167632 A072157 this_sequence A152760 A016826 A038688
Adjacent sequences: A075212 A075213 A075214 this_sequence A075216 A075217 A075218
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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 08 2003
More terms from Herman Jamke (hermanjamke(AT)fastmail.fm), May 05 2007
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