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A076315
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Number of 3-colorable (i.e. chromatic number <= 3) simple graphs on n nodes.
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7
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OFFSET
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1,2
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LINKS
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Table of n, a(n) for n=1..9.
Eric Weisstein's World of Mathematics, n-Colorable Graph
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CROSSREFS
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Cf. A033995, A076316, A076317, A076318, A076319, A076320, A076321.
Sequence in context: A086631 A047051 A126349 * A102667 A148115 A148116
Adjacent sequences: A076312 A076313 A076314 * A076316 A076317 A076318
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KEYWORD
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nonn,more
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AUTHOR
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Eric W. Weisstein, Oct 06, 2002
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STATUS
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approved
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