OFFSET
0,1
FORMULA
Equals (5/63)*(5 + 2*sqrt(3)).
EXAMPLE
0.67175409643950433230594386373109085189568337362069...
MATHEMATICA
s = Sum[Abs[Sin[k Pi/6]/2^k], {k, 0, Infinity}]
d = N[s, 100]
First[RealDigits[d]]
CROSSREFS
KEYWORD
AUTHOR
Clark Kimberling, Jul 16 2024
STATUS
approved