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A308458
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Expansion of e.g.f. log(Sum_{k>=0} k^binomial(k,2) * x^k / k!).
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1
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1, 1, 23, 3994, 9745169, 470126386536, 558542572785461515, 19342808645467142112096240, 22528399370853856386499346950471953, 999999999774716004550606847948627702867525440, 1890591424701781041871514584507296209311760279398415565711
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OFFSET
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1,3
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LINKS
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EXAMPLE
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E.g.f.: x + x^2/2! + 23*x^3/3! + 3994*x^4/4! + 9745169*x^5/5! + 470126386536*x^6/6! + 558542572785461515*x^7/7! + ... .
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PROG
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(PARI) N=20; x='x+O('x^N); Vec(serlaplace(log(sum(k=0, N, k^binomial(k, 2)*x^k/k!))))
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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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