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A052438
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Number of simple unlabeled n-node graphs with 2 center nodes.
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5
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0, 2, 0, 2, 4, 19, 84, 821, 12485, 343572, 16164685, 1289300669
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,2
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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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EXTENSIONS
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STATUS
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approved
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