OFFSET
0,1
REFERENCES
L. B. W. Jolley, Summation of Series, Dover, 1961, Eq. (329).
LINKS
Michael I. Shamos, Shamos's catalog of the real numbers (2011).
FORMULA
Equals 23 * Pi^4 / (2^4 * 3^4 * sqrt(3)).
Equals 1 + Sum_{k>=1} ( (-1)^k/(6*k-1)^4 + (-1)^k/(6*k+1)^4 ).
EXAMPLE
0.99807159983792868732970969812...
MATHEMATICA
First[RealDigits[N[23*Pi^4/(2^4*3^4*Sqrt[3]), 100]]] (* Stefano Spezia, Jul 19 2021 *)
RealDigits[(23 Pi^4)/(1296 Sqrt[3]), 10, 120][[1]] (* Harvey P. Dale, Jun 20 2023 *)
CROSSREFS
KEYWORD
AUTHOR
Sean A. Irvine, Jul 18 2021
STATUS
approved