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 A073100 Denominator of b(n) = n*sum(k=2^n,2^(n+1)-1,(-1)^k/k). 1
 6, 210, 120120, 18050444111700, 118226688410282226751136160, 1112813007583117631616979100370019711878239390670756000, 1191035057635417333689929196555456096447880322064975132139675263681349241137859495385119040334214863238544000 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 REFERENCES G. Vacca,"A new series for the Eulerian constant", Quart. J. Pure Appl. Math.,1910, vol. 41, p. 363-368 LINKS FORMULA Sum( k>=1, b(k) ) = gamma =0, 5772..... PROG (PARI) a(n)=denominator( n*sum(k=2^n, 2^(n+1)-1, (-1)^k/k)) CROSSREFS Cf. A001620, A073099. Sequence in context: A238685 A099788 A126676 * A093536 A002037 A332989 Adjacent sequences:  A073097 A073098 A073099 * A073101 A073102 A073103 KEYWORD easy,frac,nonn AUTHOR Benoit Cloitre, Aug 18 2002 STATUS approved

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Last modified January 21 06:14 EST 2021. Contains 340333 sequences. (Running on oeis4.)