A171536 Decimal expansion of 2/sqrt(7).

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

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 ; -2 -1/2 | 5/2 -5/2>.

Examples

			sqrt(4/7) = 0.75592894601845445442903307...
		

Links

• Wikipedia, Table of Clebsch-Gordan coefficients

Programs

Mathematica

RealDigits[2/Sqrt[7],10,120][[1]] (* Harvey P. Dale, Jan 02 2022 *)

Formula

equals 2*A020764 = 2/A010465.