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 A256319 Decimal expansion of Sum_{k>=0} (zeta(2k)/(2k+1))*(3/4)^(2k) (negated). 2
 0, 7, 6, 0, 9, 9, 8, 2, 7, 1, 2, 9, 7, 1, 3, 4, 0, 0, 6, 4, 1, 5, 1, 3, 2, 1, 1, 5, 4, 1, 7, 4, 5, 8, 3, 5, 7, 3, 0, 8, 5, 2, 9, 8, 2, 2, 6, 1, 4, 5, 1, 3, 9, 0, 1, 0, 9, 8, 3, 6, 1, 4, 6, 0, 0, 2, 7, 6, 5, 8, 5, 9, 8, 6, 5, 6, 1, 0, 7, 2, 4, 9, 9, 2, 5, 9, 0, 2, 2, 3, 6, 4, 8, 0, 5, 9, 9, 8, 5, 5, 8, 2, 5 (list; constant; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 LINKS G. C. Greubel, Table of n, a(n) for n = 0..10000 H. M. Srivasata, M. L. Glasser, Victor S. Adamchik, Some Definite Integrals Associated with the Riemann Zeta Function FORMULA Equals G/(3*Pi) - log(2)/4, where G is Catalan's constant. EXAMPLE -0.0760998271297134006415132115417458357308529822614513901... MATHEMATICA Join[{0}, RealDigits[Catalan/(3 Pi) - Log[2]/4, 10, 102] // First] PROG (PARI) suminf(k=0, (zeta(2*k)/(2*k+1))*(3/4)^(2*k)) \\ Michel Marcus, Mar 23 2015 (PARI) default(realprecision, 100); Catalan/(3*Pi) - log(2)/4 \\ G. C. Greubel, Aug 25 2018 (Magma) SetDefaultRealField(RealField(100)); R:=RealField(); Catalan(R)/(3*Pi(R)) - Log(2)/4; // G. C. Greubel, Aug 25 2018 CROSSREFS Cf. A006752, A256318. Sequence in context: A094123 A132799 A154580 * A324688 A334400 A309700 Adjacent sequences: A256316 A256317 A256318 * A256320 A256321 A256322 KEYWORD nonn,cons,easy AUTHOR Jean-François Alcover, Mar 23 2015 STATUS approved

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Last modified June 12 14:48 EDT 2024. Contains 373331 sequences. (Running on oeis4.)