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A094602
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Total number of edges in all connected unlabeled graphs on n nodes.
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1
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0, 1, 5, 25, 130, 951, 9552, 160220, 4756703, 264964172, 27746801125, 5419696866001, 1964101824992259, 1319988856541150115, 1648566523004692022634, 3838409698542815296758222, 16719797018733808721401666187, 136732968429033400292302529059213
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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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PROG
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(PARI) \\ See A054923 for G, InvEulerMT.
a(n)={subst(deriv(InvEulerMT(vector(n, k, G(k, y)))[n]), y, 1)} \\ Andrew Howroyd, Feb 01 2020
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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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