Search: id:A086237
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%I A086237
%S A086237 1,4,6,7,0,7,8,0,7,9,4,3,3,9,7,5,4,7,2,8,9,7,7,9,8,4,8,4,7,0,7,2,2,9,9,
%T A086237 5,3,4,4,9,9,0,3,3,2,2,4,1,4,8,8,7,7,7,7,3,9,9,6,8,5,8,1,7,6,1,6,6,0,6,
%U A086237 7,4,4,3,2,9,0,4,4,8,0,8,4,3,0,3,6,9,3,2,7,5,1,1,1,7,4,0,1,5,2,1,2,6,6
%N A086237 Decimal expansion of Porter's Constant.
%C A086237 6*ln2/Pi^2 (3*ln2 + 4 Gamma - 24/Pi^2*Zeta'(2) - 2)
%D A086237 S. R. Finch, Mathematical Constants, Encyclopedia of Mathematics and 
               its Applications, vol. 94, Cambridge University Press, p. 157
%D A086237 Julian Havil, Gamma, Exploring Euler's Constant, Princeton University 
               Press, Princeton and Oxford, 2003, page 113.
%H A086237 Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/
               PortersConstant.html">Porter's Constant</a>
%e A086237 1.4670...
%t A086237 (* first do *) Needs["NumericalMath`NLimit`"], (* then *) RealDigits[ 
               N[ Log[64] / Pi^2(Log[8] + 4EulerGamma - 24/Pi^2 ND[ Zeta[z], z, 
               2, WorkingPrecision -> 200, Scale -> 10^-20, Terms -> 20] - 2) - 
               1/2, 111]][[1]] (from EWW May 20 2004)
%Y A086237 Sequence in context: A082237 A042976 A090142 this_sequence A136323 A135798 
               A021218
%Y A086237 Adjacent sequences: A086234 A086235 A086236 this_sequence A086238 A086239 
               A086240
%K A086237 nonn,cons
%O A086237 1,2
%A A086237 Eric Weisstein (eric(AT)weisstein.com), Jul 12, 2003

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