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A070766
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Number of polyhexes with n cells that tile the plane.
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12
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1, 1, 3, 7, 22, 77, 294, 1054, 3788, 11326, 24790, 103641, 164559, 532510, 1574252, 2939898, 4761009, 21048218, 24306306, 95707819, 205176450
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,3
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REFERENCES
| M. Gardner, Tiling with Polyominoes, Polyiamonds and Polyhexes. Chap. 14 in Time Travel and Other Mathematical Bewilderments. New York: W. H. Freeman, pp. 175-187, 1988.
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LINKS
| Joseph Myers, Polyhex tiling
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CROSSREFS
| Cf. A000228-A070767, A018190-A070768, cf. A054359.
Sequence in context: A148688 A181769 A075214 * A111772 A018190 A187982
Adjacent sequences: A070763 A070764 A070765 * A070767 A070768 A070769
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KEYWORD
| hard,nonn
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AUTHOR
| Joseph Myers (jsm(AT)polyomino.org.uk), May 05 2002
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EXTENSIONS
| More terms from Joseph Myers (jsm(AT)polyomino.org.uk), Nov 06 2003
a(20) and a(21) from Joseph Myers (jsm(AT)polyomino.org.uk), Nov 17 2010
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