OFFSET
0,1
COMMENTS
LINKS
Juan Arias de Reyna and Jan van de Lune, On the exact location of the non-trivial zeros of Riemann's zeta function, arXiv:1305.3844 [math.NT], 2013, formula (4).
FORMULA
Equals sqrt(Pi/cosh(Pi*sqrt(3)/2).
Equals 1/sqrt(3*A109219).
EXAMPLE
0.641739372784755...
MATHEMATICA
RealDigits[Abs[Gamma[Cos[Pi/3] + I Sin[Pi/3]]], 10, 106][[1]]
(* or *)
RealDigits[Sqrt[Pi/Cosh[Pi Sqrt[3]/2]], 10, 106][[1]]
PROG
(PARI) abs(gamma(exp(I*Pi/3))) \\ Michel Marcus, Sep 01 2023
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Artur Jasinski, Sep 01 2023
STATUS
approved