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A084273
Number of labeled connected 3-chromatic (i.e., chromatic number = 3) graphs on n nodes.
2
0, 0, 1, 18, 472, 18855
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OFFSET
1,4
LINKS
Table of n, a(n) for n=1..6.
Eric Weisstein's World of Mathematics,
n-Chromatic Graph
CROSSREFS
Cf.
A001832
,
A084274
.
Sequence in context:
A086501
A204241
A053115
*
A230587
A281161
A027405
Adjacent sequences:
A084270
A084271
A084272
*
A084274
A084275
A084276
KEYWORD
nonn
,
more
AUTHOR
Eric W. Weisstein
, May 24 2003
STATUS
approved
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Last modified August 27 07:05 EDT 2024. Contains 375462 sequences. (Running on oeis4.)