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A123423
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Number of forests with n nodes that are perfect graphs.
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0
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OFFSET
| 1,2
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COMMENTS
| 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
| S. Hougardy, Classes of perfect graphs, Discr. Math. 306 (2006), 2529-2571.
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LINKS
| S. Hougardy, Home Page
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CROSSREFS
| Sequence in context: A007148 A093371 A003214 * A005195 A052843 A120707
Adjacent sequences: A123420 A123421 A123422 * A123424 A123425 A123426
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KEYWORD
| nonn,more
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), Oct 18 2006, Jul 03 2008
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