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%I #14 Apr 04 2020 10:15:59
%S 2,1,7,5,3,4,2,6,4,9,6,7,0,0,2,1,4,1,0,7,7,6,7,8,6,7,5,9,6,5,6,0,6,9,
%T 9,7,5,8,4,8,4,4,7,4,6,7,6,2,4,1,8,4,2,1,3,7,5,0,5,4,0,0,5,5,1,4,7,0,
%U 3,0,7,1,0,2,8,9,3,5,0,6,1,8,1,9,9,0,8,7,8,4,0,4,8,3,5,5,8,2,9,1,0,8
%N Decimal expansion of 1/(1-cos(1)).
%C The value of the fractional limit of the numerators(A206531+2*A206532) and the denominators(A206532).
%C Abs(A206532/(1-cos(1)) - (A206531+2*A206532)) -> 0.
%D E. W. Cheney, Introduction to Approximation Theory, McGraw-Hill, Inc., 1966.
%F Equals 1/(1-A049470).
%F A206531/A206532+2 -> 1/(1-A 49470).
%e 2.17534264967002141077678675965606997584844...
%t RealDigits[N[1/(1-Cos[1]), 150]][[1]]
%Y Cf. A002939, A082108, A206531, A206532, A049470.
%K cons,nonn
%O 1,1
%A _Seiichi Kirikami_, Feb 11 2012
%E Invalid a(86)=9 removed by _Georg Fischer_, Apr 04 2020
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