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A126734
Number of connected graphs on n nodes with edge chromatic number 4.
0
0, 0, 0, 0, 10, 48, 279, 1715, 11464, 87114
OFFSET
1,5
CROSSREFS
A diagonal of triangle in A126732.
Sequence in context: A084857 A349948 A330170 * A264266 A048698 A045770
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Feb 16 2007
STATUS
approved