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A145269
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Number of simple nonplanar graphs on n nodes.
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2
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0, 0, 0, 0, 0, 1, 14, 222, 5380, 194815, 10864252, 1000316856, 164757860141
(list;
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refs;
listen;
history;
text;
internal format)
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OFFSET
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0,7
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LINKS
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Table of n, a(n) for n=0..12.
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
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FORMULA
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a(n) = A000088(n) - A005470(n).
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CROSSREFS
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Cf. A145270.
Sequence in context: A225315 A292041 A319114 * A221582 A320762 A027774
Adjacent sequences: A145266 A145267 A145268 * A145270 A145271 A145272
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KEYWORD
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nonn,more
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AUTHOR
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Eric W. Weisstein, Oct 05 2008
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EXTENSIONS
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Edited by Max Alekseyev, Sep 18 2009
a(12) added by Max Alekseyev, Aug 17 2015
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STATUS
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approved
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