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A288564
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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 solid pseudo-circles is a connected set.
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0
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OFFSET
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0,3
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COMMENTS
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Arrangements in A288563 that are connected (in the sense that the union of the solid 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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Table of n, a(n) for n=0..5.
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CROSSREFS
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Cf. A250001, A275923, A275924, A288554-A288568.
Sequence in context: A288556 A353930 A295246 * A295646 A124836 A013104
Adjacent sequences: A288561 A288562 A288563 * A288565 A288566 A288567
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KEYWORD
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nonn,more
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AUTHOR
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N. J. A. Sloane, Jun 13 2017, based on information supplied by Jon Wild on Aug 31 2016.
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STATUS
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approved
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