OFFSET
0,7
LINKS
Slavik Jablan, Ljiljana Radovic, Radmila Sazdanovic (2011). Nonplanar graphs derived from Gauss codes of virtual knots and links, J. Math. Chem. 49(10), 2250-2267, DOI:10.1007/s10910-011-9884-6
Eric Weisstein's World of Mathematics, Nonplanar Graph
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Eric W. Weisstein, Oct 05 2008
EXTENSIONS
Edited by Max Alekseyev, Sep 18 2009
a(12) added by Max Alekseyev, Aug 17 2015
STATUS
approved