A373019 - OEIS

A373019

Decimal expansion of Sum_{k>=0} sin(k*Pi/6)/2^k.

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

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OFFSET

0,1

LINKS

Table of n, a(n) for n=0..85.

FORMULA

Equals (1/13)*(5 + 2*sqrt(3)).

EXAMPLE

0.65108473962598112208114559100090344106812388520...

MATHEMATICA

s = Sum[Sin[k Pi/6]/2^k, {k, 0, Infinity}]

d = N[s, 100]