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Decimal expansion of cosh(1) - cos(1).
1

%I #32 Aug 06 2024 05:56:06

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

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

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

%N Decimal expansion of cosh(1) - cos(1).

%H Michael Ian Shamos, <a href="https://citeseerx.ist.psu.edu/pdf/ae33a269baba5e8b1038e719fb3209e8a00abec5">Shamos's catalog of the real numbers</a>, (2011).

%F Equals 2 * Sum_{k>=0} 1/(4*k+2)! = 2 * A334364. - _Amiram Eldar_, Dec 11 2021

%e 1.00277832894710406107696901331408507...

%t RealDigits[Cosh[1] - Cos[1], 10, 100][[1]] (* _Amiram Eldar_, Dec 11 2021 *)

%o (PARI) cosh(1) - cos(1)

%Y Cf. A073743, A049470, A334364, A334365.

%K nonn,cons

%O 1,4

%A _Christoph B. Kassir_, Dec 11 2021