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A288565
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Number of connected one-sided arrangements of n pseudo-circles in the affine plane, in the sense that the union of the boundaries of the pseudo-circles is a connected set.
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0
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OFFSET
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0,4
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COMMENTS
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Arrangements in A288559 that are connected, in the sense that the union of the (boundaries of the) pseudo-circles is a connected set.
These counts have not been reduced for mirror symmetry.
See A250001, the main entry for this problem, for further information.
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LINKS
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CROSSREFS
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KEYWORD
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nonn,more
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AUTHOR
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STATUS
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approved
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