OFFSET
1,7
REFERENCES
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.
LINKS
Aidan Globus and Hans Parshall, Small unit-distance graphs in the plane, arXiv:1905.07829 [math.CO], 2019.
Eric Weisstein's World of Mathematics, Unit-Distance Graph
CROSSREFS
KEYWORD
nonn,hard,more
AUTHOR
Eric W. Weisstein, May 21 2019
STATUS
approved