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Search: id:A079453
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| A079453 |
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Number of unlabeled and connected graphs on n vertices which are HH-free ("house-hole-free"). |
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+0
1
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OFFSET
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1,3
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COMMENT
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Also characterized as Weakly Chordal Meyniel graphs or P5-free Weakly Chordal graphs.
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REFERENCES
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R. Hayward, Meyniel Weakly Triangulated Graphs I: Co-perfect orderability Discrete Applied Mathematics 73 (1997) 199-210
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CROSSREFS
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Sequence in context: A008989 A057240 A079564 this_sequence A127942 A110956 A028689
Adjacent sequences: A079450 A079451 A079452 this_sequence A079454 A079455 A079456
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KEYWORD
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more,nonn
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AUTHOR
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Jim Nastos (nastos(AT)gmail.com), Jan 13 2003
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EXTENSIONS
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Corrected by Jim Nastos, Jan 20 2003
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