OFFSET
0,1
COMMENTS
The magnitude of the difference is provided in A228438.
LINKS
G. C. Greubel, Table of n, a(n) for n = 0..10000
C. Croux and C. Dehon, Influence functions of the Spearman and Kendall correlation measures, Statistical Methods and Applications, 19(4), 497-515, 2010, (see Eq. 5).
R. Guérin, J. C. de Oliveira, and S. Weber, Adoption of bundled services with network externalities and correlated affinities, arXiv:1310.4429 [cs.NI], 2013.
FORMULA
Equals 2*sqrt((Pi-3)*(Pi+3))/Pi.
Equals sqrt(4*Pi^2 - 36)/Pi.
EXAMPLE
0.59366437393180351429989006194597732436545536523973...
MATHEMATICA
RealDigits[Sqrt[4*Pi^2 - 36]/Pi, 10, 110][[1]] (* T. D. Noe, Nov 04 2013 *)
PROG
(MATLAB) vpa('2*((pi-3)*(pi+3))^.5/pi', 50)
(PARI) sqrt(4*Pi^2-36)/Pi \\ G. C. Greubel, Apr 03 2017
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Joost de Winter, Nov 02 2013
STATUS
approved