A206530 - OEIS

%I #15 Dec 20 2022 11:23:28

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

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

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

%N Decimal expansion of 1/(1-sin(1)).

%C The value of the limit of (A206307+6*A206308) / (A206308).

%D E. W. Cheney, Introduction to Approximation Theory, McGraw-Hill, Inc., 1966.

%H G. C. Greubel, <a href="/A206530/b206530.txt">Table of n, a(n) for n = 1..5000</a>

%F Equals 1/(1-A049469).

%F A206307/A206308 + 6 -> 1/(1-A049469).

%F Abs(A206308/(1-sin(1)) - (A206307 + 6*A206308)) -> 0.

%e 6.3079935164437400275135217398...

%t RealDigits[N[1/(1-Sin[1]), 150]][[1]]

%o (Magma) SetDefaultRealField(RealField(150)); 1/(1-Sin(1)); // _G. C. Greubel_, Dec 20 2022

%o (SageMath) numerical_approx(1/(1-sin(1)), digits=150) # _G. C. Greubel_, Dec 20 2022

%Y Cf. A002943, A049469, A125202, A206307, A206308.

%K nonn,cons

%O 1,1

%A _Seiichi Kirikami_, Feb 11 2012