OFFSET
0,2
COMMENTS
Same quantity as in A243710, but expressed as a fraction of the full solid angle of 4*Pi.
LINKS
Stanislav Sykora, Table of n, a(n) for n = 0..2001
FORMULA
Equals A243710/(4*Pi).
EXAMPLE
0.0394381887135864812051517857389190563773828925242886272371475...
MATHEMATICA
RealDigits[ArcTan[Sqrt[Tan[3/4]*Tan[1/4]^3]]/Pi, 10, 120, -1][[1]] (* Amiram Eldar, Jun 11 2023 *)
PROG
(PARI) atan(sqrt(tan(3/4)*tan(1/4)^3))/Pi
CROSSREFS
KEYWORD
AUTHOR
Stanislav Sykora, Jun 08 2014
STATUS
approved