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A126753
Number of biconnected graphs on n nodes with chromatic number 5.
0
0, 0, 0, 0, 1, 3, 34, 627, 23262, 1686975, 231563309
OFFSET
1,6
COMMENTS
It is possible that the definition should say "connected" rather than "biconnected". Should be rechecked! - Max Alekseyev and Brendan McKay, Jun 17 2008
CROSSREFS
A diagonal of triangle in A126749.
Sequence in context: A143638 A262673 A365040 * A047794 A332679 A256512
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Feb 18 2007
EXTENSIONS
a(11) from Michael Sollami, Feb 18 2012
STATUS
approved