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A207410
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Number of connected triangle-free graphs on n nodes with edge chromatic number 4.
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2
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0, 0, 0, 0, 1, 4, 25, 136, 772, 4953, 35340, 288335, 2632792, 26726855, 296550560
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,6
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LINKS
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CROSSREFS
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KEYWORD
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nonn,more
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AUTHOR
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STATUS
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approved
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