A296410 - OEIS

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A296410

Number of non-isomorphic digon-free arrangements of n pairwise intersecting pseudo-circles on a sphere, reduced for mirror symmetry.

%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