OFFSET
1,1
REFERENCES
Bruce C. Berndt, Ramanujan Notebook part II, Infinite series, Springer Verlag, 1989, p. 241.
FORMULA
Equals ((1/2)/Pi)*cosh(Pi/2*sqrt(7)).
EXAMPLE
5.07922020866367833604368795...
MATHEMATICA
RealDigits[Cosh[Pi/2*Sqrt[7]]/(2*Pi), 10, 120][[1]] (* Amiram Eldar, Jun 01 2023 *)
PROG
(PARI) 1/2/Pi*cosh(Pi/2*sqrt(7))
CROSSREFS
KEYWORD
cons,nonn
AUTHOR
Benoit Cloitre, Jun 21 2003
STATUS
approved