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%I #12 Aug 21 2019 03:19:38
%S 1,1,1,1,3,5,17,40,145,355,1264,3931,12999,44727
%N Number of 4-regular 3-connected planar graphs with n vertices having an Eulerian tour for which no two consecutive edges are incident with the same face.
%C Polyhedra formed by knot diagrams.
%Y Cf. A007022.
%K nonn,more
%O 8,5
%A _Jan Kristian Haugland_, Jun 09 2019
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