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A082690
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Denominator of n*sum(k=1,(-1)^(k+1)/(n+k)).
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1
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2, 6, 20, 210, 504, 4620, 51480, 90090, 1361360, 23279256, 21162960, 446185740, 2059318800, 5736673800, 155272637520, 9025222055850, 8494326640800, 8022419605200, 281206918792800, 267146572853160, 10431437606647200
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OFFSET
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1,1
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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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