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%I #11 Jul 20 2024 06:49:05
%S 6,7,1,7,5,4,0,9,6,4,3,9,5,0,4,3,3,2,3,0,5,9,4,3,8,6,3,7,3,1,0,9,0,8,
%T 5,1,8,9,5,6,8,3,3,7,3,6,2,0,6,9,5,3,3,7,7,8,6,6,3,6,0,2,8,4,8,4,4,3,
%U 3,8,1,2,2,0,7,7,4,6,0,3,7,6,3,1,9,2
%N Decimal expansion of Sum_{k>=0} |sin(k*Pi/6)|/2^k.
%F Equals (5/63)*(5 + 2*sqrt(3)).
%e 0.67175409643950433230594386373109085189568337362069...
%t s = Sum[Abs[Sin[k Pi/6]/2^k], {k, 0, Infinity}]
%t d = N[s, 100]
%t First[RealDigits[d]]
%Y Cf. A373019.
%K nonn,easy,cons
%O 0,1
%A _Clark Kimberling_, Jul 16 2024
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