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A076281 Number of 5-chromatic (i.e. chromatic number equals 5) simple graphs on n nodes. +0
8
0, 0, 0, 0, 1, 5, 52, 867, 28722, 1919895 (list; graph; listen)
OFFSET

1,6

LINKS

Keith M. Briggs, Combinatorial Graph Theory

Eric Weisstein's World of Mathematics, n-Chromatic Graph

CROSSREFS

Cf. A076278, A076279, A076280, A076282.

Sequence in context: A071583 A099881 A108459 this_sequence A099977 A001173 A107803

Adjacent sequences: A076278 A076279 A076280 this_sequence A076282 A076283 A076284

KEYWORD

nonn,more

AUTHOR

Eric Weisstein (eric(AT)weisstein.com), Oct 06, 2002

EXTENSIONS

a(10) from Keith Briggs, Mar 14 2006.

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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.


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