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A079573 Number of unlabeled, connected graphs on n vertices with no induced subgraph isomorphic to a diamond, where a diamond is the graph on four vertices formed by removing an edge from the complete graph K4. 0
1, 1, 2, 5, 13, 46, 194, 1138, 8973, 101496, 1647556, 38368079, 1264177225 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,3
LINKS
A. Brandstadt, (P5,diamond)-free graphs Revisited: Structure and Linear Time optimization, in Optimal discrete structures and algorithms (ODSA 2000). Discrete Appl. Math. 138 (2004), 13-27.
F. Hüffner, tinygraph, software for generating integer sequences based on graph properties, version 39d0919
CROSSREFS
Sequence in context: A221546 A085632 A111563 * A360513 A194635 A212821
KEYWORD
more,nonn
AUTHOR
Jim Nastos, Jan 24 2003
EXTENSIONS
a(10)-a(13) added using tinygraph by Falk Hüffner, Jan 14 2016
STATUS
approved

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Last modified June 24 09:58 EDT 2024. Contains 373674 sequences. (Running on oeis4.)