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A336742
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Number of self-avoiding cycles of length 2n on the half-Manhattan lattice.
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3
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1, 0, 1, 1, 2, 6, 17, 49, 156, 520, 1762, 6110, 21713, 78469, 287393, 1065951, 3998286, 15140500, 57817817, 222478829, 861952579, 3360043843, 13171307962
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OFFSET
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0,5
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COMMENTS
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In the half-Manhattan lattice, E-W streets run alternately E and W, but N-S streets are two way.
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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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