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Search: id:A123423
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| A123423 |
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Number of forests with n nodes that are perfect graphs. |
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+0
1
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OFFSET
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1,2
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COMMENT
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This is different from A005195, although the initial terms agree. - N. J. A. Sloane (njas(AT)research.att.com), Dec 20 2008
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REFERENCES
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S. Hougardy, Classes of perfect graphs, Discr. Math. 306 (2006), 2529-2571.
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LINKS
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S. Hougardy, Home Page
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CROSSREFS
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Sequence in context: A007148 A093371 A003214 this_sequence A005195 A052843 A120707
Adjacent sequences: A123420 A123421 A123422 this_sequence A123424 A123425 A123426
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KEYWORD
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nonn,more
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com), Oct 18 2006, Jul 03 2008
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