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A056625
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a(n) is the total area of all self-avoiding polygons of length 2n on the square lattice.
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3
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1, 4, 22, 124, 726, 4352, 26614, 165204, 1037672, 6580424, 42062040, 270661328, 1751614248, 11391756176, 74406502814, 487838450116, 3209229661682, 21175301453040, 140097533633112, 929160187609096
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OFFSET
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2,2
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LINKS
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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