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A286949
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Number of perfect disconnected simple graphs on n nodes.
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0
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0, 1, 2, 5, 13, 43, 182, 1082, 9979, 147043, 3419289, 119265551
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,3
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LINKS
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FORMULA
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EXAMPLE
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\bar K_2; (1 graph)
\bar K_3, K_1 \cup K_2; (2 graphs)
\bar K_4, P_2 \cup 2 K_1, P_3 \cup K_1, C_3 \cup K_1, 2P_2 (5 graphs)
Here, \bar indicates a graph complement and \cup a (disjoint) graph union.
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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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