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A086216
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Number of 4-connected unlabeled n-node graphs.
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9
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0, 0, 0, 0, 1, 4, 25, 384, 14480, 1211735, 184649399
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,6
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COMMENTS
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The definition means that the connectivity is 4 or more.
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LINKS
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FORMULA
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EXAMPLE
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There are 4 different 4-connected graphs on 6 vertices. - Dylan Thurston, Jun 18 2009
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CROSSREFS
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See A052445 for exactly-4-connected graphs.
See A086217 for 5-connected graphs.
See A259862 for further information.
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KEYWORD
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nonn,hard,more
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AUTHOR
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EXTENSIONS
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a(10) from the Encyclopedia of Finite Graphs (Travis Hoppe and Anna Petrone), Apr 11 2014
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STATUS
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approved
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