A171545 Decimal expansion of sqrt(2/7).

5, 3, 4, 5, 2, 2, 4, 8, 3, 8, 2, 4, 8, 4, 8, 7, 6, 9, 3, 6, 9, 1, 0, 6, 9, 6, 1, 7, 5, 9, 5, 0, 7, 0, 4, 3, 1, 0, 8, 0, 0, 2, 8, 2, 9, 6, 8, 2, 6, 7, 5, 2, 7, 8, 0, 4, 3, 3, 9, 2, 2, 0, 9, 6, 1, 7, 1, 4, 7, 8, 7, 9, 4, 7, 2, 4, 1, 9, 8, 6, 1, 1, 3, 9, 5, 4, 4, 2, 7, 0, 7, 4, 2, 0, 5, 4, 2, 2, 4, 5, 0, 0, 1, 4, 1

Offset: 0

Author

R. J. Mathar, Dec 11 2009

Keywords

• cons
• easy
• nonn

Comments

The absolute value of the Clebsch-Gordan coupling coefficient = <2 3/2 ; 0 -3/2 | 7/2 -3/2>.

Examples

			sqrt(2/7) = sqrt(14)/7 = 0.53452248382484876936910696175950...
		

Links

• G. C. Greubel, Table of n, a(n) for n = 0..10000
• Wikipedia, Table of Clebsch-Gordan coefficients

Programs

Magma

SetDefaultRealField(RealField(100)); Sqrt(2/7); // G. C. Greubel, Oct 02 2018

Mathematica

RealDigits[N[Sqrt[2/7],200]][[1]] (* Vladimir Joseph Stephan Orlovsky, Mar 04 2011*)

PARI

default(realprecision, 100); sqrt(2/7) \\ G. C. Greubel, Oct 02 2018

Formula

Equals A002193/A010465 = 2/A010471 = A010467/A010490.