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A350089
Decimal expansion of 3*Pi^2/256 - 1/9.
0
4, 5, 4, 8, 3, 1, 5, 4, 6, 4, 1, 5, 4, 8, 1, 0, 2, 0, 3, 3, 5, 5, 5, 8, 0, 2, 9, 3, 6, 8, 7, 5, 3, 5, 0, 0, 5, 8, 4, 6, 3, 0, 3, 8, 1, 7, 4, 9, 1, 9, 0, 4, 0, 4, 2, 1, 7, 0, 3, 2, 6, 8, 9, 1, 4, 6, 7, 5, 3, 9, 1, 5, 1, 6, 1, 3, 9, 5, 0, 3, 3, 0, 3, 1, 5, 9
OFFSET
-2,1
FORMULA
Equals Sum_{k>=1} 1/((2k-1)(2k+1)(2k+3))^2.
EXAMPLE
0.0045483154641548102033555802936875350058...
MATHEMATICA
RealDigits[3*Pi^2/256 - 1/9, 10, 100][[1]] (* Amiram Eldar, Dec 14 2021 *)
PROG
(PARI) 3*Pi^2/256 - 1/9
CROSSREFS
Cf. A000796.
Sequence in context: A343442 A232635 A201296 * A246954 A045834 A106148
KEYWORD
nonn,cons
AUTHOR
Christoph B. Kassir, Dec 13 2021
STATUS
approved