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A076281 Number of 5-chromatic (i.e., chromatic number equals 5) simple graphs on n nodes. 11
0, 0, 0, 0, 1, 5, 52, 867, 28722, 1919895, 250530482 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,6
LINKS
Table of n, a(n) for n=1..11.
Keith M. Briggs, Combinatorial Graph Theory
Eric Weisstein's World of Mathematics, n-Chromatic Graph
CROSSREFS
Column k=5 of A084268.
Cf. A076278, A076279, A076280, A076282.
Sequence in context: A108459 A223898 A210096 * A099977 A274257 A336609
Adjacent sequences: A076278 A076279 A076280 * A076282 A076283 A076284
KEYWORD
nonn,more
AUTHOR
Eric W. Weisstein, Oct 06 2002
EXTENSIONS
a(10) from Keith Briggs, Mar 14 2006
a(11) from Michael Sollami, Jan 28 2012
STATUS
approved

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Last modified June 18 08:27 EDT 2024. Contains 373472 sequences. (Running on oeis4.)