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%I #10 Dec 11 2017 17:39:45
%S 1,1,1,1,2,14,2131,3012906
%N Number of non-isomorphic digon-free cylindrical arrangements of n pairwise intersecting pseudo-circles on a sphere, in the sense that two cells of the arrangement are separated by each of the pseudo-circles, reduced for mirror symmetry.
%C For more information, see A296406.
%Y Cf. A250001, A275923, A275924, A288554-A288568, A296406, A296407-A296412, A006248.
%K nonn,more
%O 0,5
%A _Manfred Scheucher_, Dec 11 2017
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