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A303829
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Birooted graphs: number of unlabeled graphs with n nodes rooted at 2 indistinguishable roots.
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5
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0, 2, 6, 28, 148, 1144, 13128, 250240, 8295664, 494367376, 53628829952, 10655018252544, 3893626388008448, 2627758027841688960, 3289042848785452985600, 7666804477507744021487616, 33416397343695235205887366144, 273365202164844511328577434284160
(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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FORMULA
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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