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A022562
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Number of connected claw-free unlabeled graphs on n nodes.
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3
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1, 1, 2, 5, 14, 50, 191, 881, 4494, 26389, 184749, 1728404, 23805256, 491544474
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,3
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REFERENCES
| R. Faudree, E. Flandrin and Z. Ryjacek, Claw-free graphs - a survey, Discr. Math., 164 (1997), 87-147.
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LINKS
| Gordon Royle, 1728404 distinct 12-vertex connected clawfree graphs
Gordon Royle, g6 format
Eric Weisstein's World of Mathematics, Claw-Free Graph
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CROSSREFS
| Cf. A022563, A022564, A058929.
Sequence in context: A081920 A006390 A100597 * A115340 A000109 A049338
Adjacent sequences: A022559 A022560 A022561 * A022563 A022564 A022565
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KEYWORD
| nonn,nice
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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EXTENSIONS
| Corrected and extended by Gordon Royle, May 16 2003
Term a(14) added by Gordon Royle (gordon(AT)maths.uwa.edu.au), Aug 06 2008
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