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A372858 Decimal expansion of (1 + log(2))/2. 3

%I #14 Jun 21 2024 09:23:03

%S 8,4,6,5,7,3,5,9,0,2,7,9,9,7,2,6,5,4,7,0,8,6,1,6,0,6,0,7,2,9,0,8,8,2,

%T 8,4,0,3,7,7,5,0,0,6,7,1,8,0,1,2,7,6,2,7,0,6,0,3,4,0,0,0,4,7,4,6,6,9,

%U 6,8,1,0,9,8,4,8,4,7,3,5,7,8,0,2,9,3

%N Decimal expansion of (1 + log(2))/2.

%F Equals Integral_{x=2..oo} (log(x))/x^2 dx.

%F Equals log(A019798). - _Hugo Pfoertner_, Jun 09 2024

%F Integral log(x)/x^m dx = -x^(1-m) Sum_{k=0..1} log^(1-k)(x)/(m-1)^(k+1). - _R. J. Mathar_, Jun 21 2024

%e 0.84657359027997265470861606072908828403775006...

%t s = Integrate[Log[x]/x^2, {x, 2, Infinity}]

%t d = N[s, 100]

%t First[RealDigits[d]]

%t N[1/2 (1 + Log[2]), 100]

%Y Cf. A019798, A372859, A372860, A372861.

%Y Essentially the same as A016655, A102047.

%K nonn,cons

%O 0,1

%A _Clark Kimberling_, Jun 09 2024

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Last modified September 12 05:07 EDT 2024. Contains 375842 sequences. (Running on oeis4.)