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A339266
Numbers of connected arrangements of n equal circles in the affine plane, in the sense that the union of the boundaries of the circles is a connected set.
1
1, 1, 1, 4, 29
OFFSET
0,4
EXAMPLE
Configurations for a(1) through a(4) are given in the links.
KEYWORD
nonn,more
AUTHOR
Ya-Ping Lu, Nov 29 2020
STATUS
approved