OFFSET
-1,1
COMMENTS
See the comment on A258146.
This is also the ratio of the area of a circular disk (radius R) without an inscribed central rectangle (2*x = sqrt(3)*R, 2*y = R) together with the two opposing circular segments each with central angle 2*Pi/3 and the area Pi*R^2 of the circular disk.
LINKS
FORMULA
0.05766888562243730857767...
MATHEMATICA
RealDigits[1/3 - Sqrt[3]/(2*Pi), 10, 50][[1]] (* G. C. Greubel, Oct 19 2017 *)
PROG
(PARI) 1/3 - sqrt(3)/(2*Pi) \\ Michel Marcus, Oct 19 2017
CROSSREFS
KEYWORD
AUTHOR
Wolfdieter Lang, Jun 01 2015
EXTENSIONS
Offset corrected by Georg Fischer, Jul 12 2021
STATUS
approved