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A027486
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First column of triangle A027477, constructed from the Stirling numbers of the first kind.
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1
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1, 3, 23, 330, 7604, 256620, 11923260, 729524880, 56840099904, 5493503695680, 644870893060800, 90366972897801600, 14899694352066120960, 2855250418022402400000, 629258349435218754451200, 158034681938560927788288000, 44866854739192779425625292800
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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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a(n) = n!*Sum_{k=1..n} (-1)^(n-k)*Stirling1(n, k)/k. Sum_{n>=0} a(n)*x^n/n!^2 = -log(log(1-x))-Ei(1, log(1-x))-gamma. - Vladeta Jovovic, Jan 29 2005
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CROSSREFS
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Cf. A027477 (Square of normalized Stirling matrix of the first kind).
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KEYWORD
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nonn,easy
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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