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A229727
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Numerator of Sum_{k=1..2n+1} 2^k/k.
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1
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2, 20, 256, 4832, 42496, 1467392, 62836736, 42790912, 2535587840, 170851041280, 3070050172928, 256460544016384, 4697678227177472, 52001663422038016, 5598478396465086464, 647670579588837146624, 2427980359983876276224, 9138219784535816536064, 1277040945143933271277568
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OFFSET
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0,1
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LINKS
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EXAMPLE
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2, 20/3, 256/15, 4832/105, 42496/315, 1467392/3465, 62836736/45045, 42790912/9009, 2535587840/153153, 170851041280/2909907, 3070050172928/14549535, 256460544016384/334639305, 4697678227177472/1673196525, 52001663422038016/5019589575, ...
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MATHEMATICA
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Take[Numerator[Accumulate[Table[2^k/k, {k, 51}]]], {1, -1, 2}] (* Harvey P. Dale, Jun 28 2021 *)
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CROSSREFS
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KEYWORD
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nonn,frac
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AUTHOR
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STATUS
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approved
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