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Search: id:A073100
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| A073100 |
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Denominator of b(n) = n*sum(k=2^n,2^(n+1)-1,(-1)^k/k). |
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+0
2
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| 6, 210, 120120, 18050444111700, 118226688410282226751136160, 1112813007583117631616979100370019711878239390670756000, 11910350576354173336899291965554560964478803220649751321396752636813492411378594\ 95385119040334214863238544000
(list; graph; listen)
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OFFSET
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1,1
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REFERENCES
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G. Vacca,"A new series for the Eulerian constant", Quart. J. Pure Appl. Math.,1910, vol. 41, p. 363-368
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FORMULA
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Sum( k>=1, b(k) ) = gamma =0, 5772.....
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PROGRAM
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(PARI) a(n)=denominator( n*sum(k=2^n, 2^(n+1)-1, (-1)^k/k))
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CROSSREFS
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Cf. A001620, A073099.
Sequence in context: A028350 A099788 A126676 this_sequence A093536 A002037 A030265
Adjacent sequences: A073097 A073098 A073099 this_sequence A073101 A073102 A073103
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KEYWORD
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easy,frac,nonn
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AUTHOR
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Benoit Cloitre (benoit7848c(AT)orange.fr), Aug 18 2002
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