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A258148
Decimal expansion of (2 - 3*sqrt(3)/Pi)/6: ratio of the area of a circular segment with central angle Pi/3 and the area of the corresponding circular half-disk
3
5, 7, 6, 6, 8, 8, 8, 5, 6, 2, 2, 4, 3, 7, 3, 0, 8, 5, 7, 7, 6, 7, 0, 0, 8, 4, 1, 7, 6, 8, 4, 8, 6, 1, 2, 6, 3, 4, 6, 4, 0, 0, 9, 3, 1, 5, 0, 0, 1, 3, 0, 0, 6, 9, 3, 3, 6, 5, 0, 3, 2, 3, 1, 8, 7, 8, 1, 8, 1, 8, 1, 5, 9, 8, 6, 9, 8, 4, 3, 5, 9
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.
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
Sequence in context: A348731 A346590 A100554 * A193013 A220607 A348607
KEYWORD
nonn,cons,easy
AUTHOR
Wolfdieter Lang, Jun 01 2015
EXTENSIONS
Offset corrected by Georg Fischer, Jul 12 2021
STATUS
approved