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A359398
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Number of unlabeled trees covering 2n nodes, half of which are leaves.
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3
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0, 1, 2, 8, 32, 158, 833, 4755, 28389, 176542, 1131055, 7432876, 49873477, 340658595, 2362652648, 16605707901, 118082160358, 848399575321, 6152038125538, 44981009272740, 331344933928536, 2457372361637286, 18337490246234464, 137612955519565773, 1038076541372187991
(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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CROSSREFS
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The labeled version is the left of central column of A055314.
A014068 counts graphs with n vertices and n-1 edges, unlabeled A001433.
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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