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%I #15 May 10 2018 03:29:44
%S 1,1,1,4,45,5108,4598809
%N Number of arrangements of n pseudo-circles in the affine plane with the property that every pseudo-circle intersects all the other circles.
%C Arrangements in A288559 that are connected, with the property that every pseudo-circle intersects all the other pseudo-circles.
%C These counts have been reduced for mirror symmetry.
%C See A250001, the main entry for this problem, for further information.
%Y Cf. A250001, A275923, A275924, A288554-A288568.
%K nonn,more
%O 0,4
%A _N. J. A. Sloane_, Jun 12 2017, based on information supplied by _Jon Wild_ on Aug 31 2016.
%E a(6) from _Manfred Scheucher_, May 09 2018
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