%I #11 Dec 11 2017 17:34:04
%S 1,1,1,1,2,14,2131,3012972
%N Number of non-isomorphic digon-free arrangements of n pairwise intersecting pseudo-circles on a sphere, 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