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A076279
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Number of 3-chromatic (i.e. chromatic number equals 3) simple graphs on n nodes.
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9
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0, 0, 1, 3, 16, 84, 579, 5721, 87381, 2104349, 78315231
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,4
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LINKS
| Keith M. Briggs, Combinatorial Graph Theory
Eric Weisstein's World of Mathematics, n-Chromatic Graph
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CROSSREFS
| Cf. A076278, A076280, A076281, A076282, A115597.
Sequence in context: A026160 A025187 A151328 * A056369 A056360 A163604
Adjacent sequences: A076276 A076277 A076278 * A076280 A076281 A076282
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KEYWORD
| nonn,more
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AUTHOR
| Eric Weisstein (eric(AT)weisstein.com), Oct 06, 2002
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EXTENSIONS
| a(10) from Keith Briggs, Mar 14 2006.
a(11) from Michael Sollami, Jan 28 2012.
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