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A316198
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Number of self-avoiding polygons with perimeter 2*n and sides = 1 that have vertex angles from the set 0, +-Pi/4, +-Pi/2, +-3*Pi/4, not counting rotations and reflections as distinct.
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7
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OFFSET
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1,2
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COMMENTS
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Holes are excluded, i.e., the boundary path may nowhere touch or intersect itself.
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LINKS
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CROSSREFS
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KEYWORD
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nonn,walk,more
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AUTHOR
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STATUS
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approved
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