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A075207
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Number of polyhexes with n cells that tile the plane by translation.
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10
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1, 1, 3, 6, 12, 36, 60, 209, 387, 1054, 1468, 6895, 7001, 23920, 49496, 126732, 146046, 638800, 647502, 2772935, 4162861
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,3
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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, Polyhex tiling
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CROSSREFS
| Cf. A070766, A075208, A075209, A075210, A075211, A075212, A075213, A075214, A075215, A075198, A075216.
Sequence in context: A033648 A102972 A075209 * A136121 A023369 A129380
Adjacent sequences: A075204 A075205 A075206 * A075208 A075209 A075210
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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 08 2003
More terms from Herman Jamke (hermanjamke(AT)fastmail.fm), May 05 2007
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