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A346585
Decimal expansion of Pi^3 / (18 * sqrt(3)).
4
9, 9, 4, 5, 2, 6, 7, 8, 8, 2, 1, 8, 8, 3, 9, 8, 3, 8, 8, 3, 5, 9, 4, 0, 1, 5, 6, 4, 7, 9, 8, 8, 8, 2, 8, 3, 7, 1, 6, 4, 3, 9, 4, 5, 9, 3, 8, 2, 3, 6, 6, 3, 0, 1, 6, 3, 0, 4, 1, 0, 8, 4, 1, 5, 9, 2, 7, 5, 5, 1, 2, 5, 4, 1, 2, 4, 8, 8, 5, 8, 5, 3, 9, 3, 4, 0, 4
OFFSET
0,1
REFERENCES
L. B. W. Jolley, Summation of Series, Dover, 1961, Eq. (314).
FORMULA
Equals Pi^3 / (2! * 3^2 * sqrt(3)).
Equals 1 + Sum_{k>=1} ( 1/(6*k+1)^3 - 1/(6*k-1)^3 ).
EXAMPLE
0.99452678821883983883594015647988828371...
MATHEMATICA
First[RealDigits[N[Pi^3 / (2! * 3^2 * Sqrt[3]), 88]]] (* Stefano Spezia, Jul 24 2021 *)
CROSSREFS
KEYWORD
nonn,cons,easy
AUTHOR
Sean A. Irvine, Jul 24 2021
STATUS
approved