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Search: id:A006726
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| A006726 |
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2n-celled polygons with perimeter n on square lattice.
(Formerly M4523)
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+0
1
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| 1, 8, 40, 168, 676, 2672, 10376, 39824, 151878, 576656, 2181496, 8229160, 30974700, 116385088, 436678520, 1636472360, 6126647748
(list; graph; listen)
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OFFSET
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1,2
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REFERENCES
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N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
I. G. Enting and A. J. Guttmann, On the area of square lattice polygons, J. Statist. Phys., 58 (1990), 475-484.
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CROSSREFS
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Sequence in context: A001789 A074412 A113071 this_sequence A165665 A000760 A155616
Adjacent sequences: A006723 A006724 A006725 this_sequence A006727 A006728 A006729
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com), Simon Plouffe (simon.plouffe(AT)gmail.com)
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