OFFSET
0,3
FORMULA
Equals Sum_{k>=2} 1/(k^6 - 1).
Equals 11/12 - Pi*tanh(sqrt(3)*Pi/2)/(2*sqrt(3)).
EXAMPLE
0.017593026385321576213756604497955200206504349480747094973246930164332437...
MATHEMATICA
Join[{0}, RealDigits[11/12 - Pi*Tanh[Sqrt[3]*Pi/2]/(2*Sqrt[3]), 10, 100][[1]]]
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Vaclav Kotesovec, Dec 08 2020
STATUS
approved