OFFSET
0,1
COMMENTS
Edge of a cube with surface area Pi.
LINKS
G. C. Greubel, Table of n, a(n) for n = 0..5000
I. S. Gradsteyn, I. M. Ryzhik, Table of integrals, series and products, (1980), page 420 (formulas 3.757.1, 3.757.2).
FORMULA
Equals (Pi/6)^(1/2).
Equals sqrt(A019673).
From A.H.M. Smeets, Sep 22 2018: (Start)
Equals Integral_{x >= 0} sin(3x)/sqrt(x) dx [Gradshteyn and Ryzhik].
Equals Integral_{x >= 0} cos(3x)/sqrt(x) dx [Gradshteyn and Ryzhik]. (End)
EXAMPLE
0.723601254558267659363...
MAPLE
sqrt(Pi/6) ; evalf(%) ; # R. J. Mathar, Sep 14 2012
MATHEMATICA
RealDigits[Sqrt[Pi/6], 10, 50][[1]] (* G. C. Greubel, May 31 2017 *)
PROG
(PARI) sqrt(Pi/6) \\ Charles R Greathouse IV, Apr 16 2014
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Omar E. Pol, Aug 09 2012
STATUS
approved