R j = ( n − j ) ⁢ ( j + n + γ + δ ) ⁢ ( j + γ ) ⁢ ( j + δ ) ( γ + δ + 2 ⁢ j ) ⁢ ( γ + δ + 2 ⁢ j + 1 ) R_{j}={\frac {(n-j)(j+n+\gamma +\delta )(j+\gamma )(j+\delta )}{(\gamma +\delta +2j)(\gamma +\delta +2j+1)}}