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A084273 Number of labeled connected 3-chromatic (i.e. chromatic number = 3) graphs on n nodes. +0
2
0, 0, 1, 18, 472, 18855 (list; graph; listen)
OFFSET

1,4
LINKS

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

CROSSREFS

Cf. A001832, A084274.

Adjacent sequences: A084270 A084271 A084272 this_sequence A084274 A084275 A084276

Sequence in context: A005477 A086501 A053115 this_sequence A027405 A116176 A035023

KEYWORD

nonn,more

AUTHOR

Eric Weisstein (eric(AT)weisstein.com), May 24, 2003

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Last modified October 13 02:37 EDT 2008. Contains 145008 sequences.

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