\[\begin{Bmatrix}j_{1}&j_{2}&j_{3}\\
1&j_{3}&j_{2}\end{Bmatrix}=(-1)^{J+1}\frac{2(j_{2}(j_{2}+1)+j_{3}(j_{3}+1)-j_{%
1}(j_{1}+1))}{\left(2j_{2}(2j_{2}+1)(2j_{2}+2)2j_{3}(2j_{3}+1)(2j_{3}+2)\right%
)^{\frac{1}{2}}}.\]