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A346728
Decimal expansion of 11 * Pi^4 / (768 * sqrt(2)).
4
9, 8, 6, 5, 4, 2, 8, 6, 0, 6, 9, 3, 9, 7, 0, 5, 0, 3, 9, 0, 1, 5, 3, 4, 4, 9, 0, 6, 1, 6, 7, 2, 6, 9, 1, 0, 9, 6, 6, 8, 3, 3, 7, 5, 7, 9, 0, 9, 5, 0, 0, 8, 5, 2, 5, 1, 7, 0, 9, 5, 2, 7, 2, 3, 1, 9, 5, 9, 4, 5, 4, 9, 5, 6, 2, 3, 9, 4, 2, 9, 7, 0, 7, 2, 0, 7, 1
OFFSET
0,1
REFERENCES
L. B. W. Jolley, Summation of Series, Dover, 1961, Eqs. (327), (344).
FORMULA
Equals 11 * Pi^4 / (2^8 * 3 * sqrt(2)).
Equals 1 + Sum_{k>=1} ( (-1)^k/(4*k-1)^4 + (-1)^k/(4*k+1) ).
Equals Sum_{k>=0} (-1)^floor((k+1)/2) / (2*k+1)^4.
EXAMPLE
0.98654286069397050390153449061672691096683375790950...
MATHEMATICA
RealDigits[11*Pi^4/(768*Sqrt[2]), 10, 120][[1]] (* Amiram Eldar, Jun 13 2023 *)
CROSSREFS
KEYWORD
nonn,cons,changed
AUTHOR
Sean A. Irvine, Jul 30 2021
STATUS
approved