

A275923


Number of connected arrangements of n circles in the affine plane, in the sense that the union of the solid circles is a connected set.


26




OFFSET

0,3


COMMENTS

Arrangements in A250001 that are connected (in the sense that the union of the solid circles is a connected set). See A250001, the main entry for this problem, for further information.


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CROSSREFS



KEYWORD

nonn,more


AUTHOR



EXTENSIONS



STATUS

approved



