OFFSET
0,1
REFERENCES
L. B. W. Jolley, Summation of Series, Dover, 1961, Eq. (316).
LINKS
Michael I. Shamos, Shamos's catalog of the real numbers (2011).
FORMULA
Equals 2 - A019670.
Equals 1 + Sum_{k>=1} ( ((-1)^k/(6*k-1) - (-1)^k/(6*k+1)) ).
EXAMPLE
0.9528024488034022538457855389...
MATHEMATICA
RealDigits[2-Pi/3, 10, 120][[1]] (* Amiram Eldar, Jun 13 2023 *)
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Sean A. Irvine, Jul 23 2021
STATUS
approved