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A082689
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Numerator of n*sum(k=1,(-1)^(k+1)/(n+k)).
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1
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1, 1, 13, 43, 347, 1013, 36331, 20431, 973993, 5386001, 15273079, 104604613, 1495109359, 1357580423, 113225690813, 2150797323119, 6214827398881, 1922198200679, 206285491870477, 64286037044903, 7668497434066577
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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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limit n->infinity n*sum(k=1, (-1)^(k+1)/(n+k)) = 1/4
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CROSSREFS
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KEYWORD
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frac,nonn
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AUTHOR
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STATUS
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approved
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