OFFSET
2,2
LINKS
Eric Weisstein's World of Mathematics, Trihyperboloid
FORMULA
Can be given as a closed-form expression involving logs, polylogs, and polygammas (which probably simplifies further).
EXAMPLE
18.769396267453...
MATHEMATICA
First[RealDigits[N[24(Sqrt[3]-1)-2Pi+12Sqrt[2]Re[NIntegrate[ArcTanh[x]/((2x^2-1)Sqrt[(1-x^(-2))/2]), {x, Sqrt[3/2], Infinity}, WorkingPrecision->100]], 90]]] (* Stefano Spezia, Sep 19 2021 *)
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Eric W. Weisstein, Sep 18 2021
STATUS
approved