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%I #8 May 22 2019 05:57:20
%S 0,0,0,1,1,1,3,13,55
%N Number of minimal unit-distance forbidden graph minors on n vertices.
%D K. B. Chilakamarri and C. R. Mahoney, Maximal and minimal forbidden unit-distance graphs in the plane, Bulletin of the ICA, 13 (1995), 35-43.
%H Aidan Globus and Hans Parshall, <a href="https://arxiv.org/abs/1905.07829">Small unit-distance graphs in the plane</a>, arXiv:1905.07829 [math.CO], 2019.
%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/Unit-DistanceGraph.html">Unit-Distance Graph</a>
%Y Cf. A059103 (simple connected unit-distance graphs).
%K nonn,hard,more
%O 1,7
%A _Eric W. Weisstein_, May 21 2019