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A220831
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Number of unrooted binary leaf-multi-labeled trees with n leaves on the label set [4], with each label used at least once.
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2
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0, 0, 0, 3, 36, 310, 2376, 17304, 123508, 874998, 6197220, 44035861, 314538360, 2260572810, 16353884828, 119102737971, 873124996284, 6441569967712, 47813037934740, 356947999429560, 2679333805629928, 20214890317096644, 153250432833122904, 1167042280999763748
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OFFSET
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1,4
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LINKS
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CROSSREFS
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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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