OFFSET
0,1
COMMENTS
The probability that a randomly chosen Eisenstein integer is squarefree, and the probability that two randomly chosen Eisenstein integers are coprime. - Amiram Eldar, Jun 13 2020
REFERENCES
Steven R. Finch, Mathematical Constants, Cambridge University Press, 2003, p. 601.
LINKS
Eric Weisstein's World of Mathematics, Relatively Prime
EXAMPLE
0.778094489...
MATHEMATICA
A086724 = H = 1+(PolyGamma[1, 4/3]-PolyGamma[1, 2/3])/9; RealDigits[6/(Pi^2*H), 10, 102] // First (* Jean-François Alcover, Jun 03 2014 *)
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Eric W. Weisstein, Oct 02 2003
STATUS
approved