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G. C. Greubel, <a href="/A238168/b238168.txt">Table of n, a(n) for n = 1..10000</a>
Equals 6*zeta(7) - zeta(2)*zeta(5) - 5/2*zeta(3)*zeta(4).
RealDigits[6*Zeta[7] - Zeta[2]*Zeta[5] - (5/2)*Zeta[3]*Zeta[4] // RealDigits[#, , 10, 100]& // First[[1]]
(PARI) 6*zeta(7) - zeta(2)*zeta(5) - (5/2)*zeta(3)*zeta(4) \\ G. C. Greubel, Dec 30 2017
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6*zeta(7) - zeta(2)*zeta(5) - 5/2*zeta(3)*zeta(4).
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allocated for JeanDecimal expansion of sum_(n>=1) H(n)^2/n^5 where H(n) is the n-François Alcoverth harmonic number.
1, 0, 9, 1, 8, 8, 2, 5, 8, 8, 6, 6, 4, 5, 3, 0, 0, 8, 5, 1, 6, 5, 7, 8, 2, 1, 3, 0, 6, 9, 9, 2, 7, 3, 8, 7, 3, 3, 7, 7, 5, 6, 7, 8, 8, 9, 5, 3, 2, 4, 0, 8, 6, 2, 6, 3, 8, 1, 2, 6, 6, 6, 6, 7, 4, 7, 6, 6, 6, 6, 7, 7, 6, 8, 4, 0, 1, 2, 8, 5, 8, 2, 0, 4, 3, 6, 9, 1, 8, 0, 6, 7, 4, 2, 6, 5, 7, 5, 7, 8
1,3
Philippe Flajolet, Bruno Salvy, <a href="http://algo.inria.fr/flajolet/Publications/FlSa98.pdf">Euler Sums and Contour Integral Representations</a>, Experimental Mathematics 7:1 (1998) page 16.
6*zeta(7) - zeta(2)*zeta(5) - 5/2*zeta(3)*zeta(4)
1.091882588664530085165782130699273873...
6*Zeta[7] - Zeta[2]*Zeta[5] - 5/2*Zeta[3]*Zeta[4] // RealDigits[#, 10, 100]& // First
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Jean-François Alcover, Feb 19 2014
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