\[R_{n,l}(r)=\frac{2}{n^{2}}\sqrt{\frac{Z^{3}(n-l-1)!}{\left((n+l)!\right)^{3}}}%
{\mathrm{e}}^{-\rho_{n}/2}\rho_{n}^{l}\mathbf{L}_{n+l}^{2l+1}(\rho_{n}).\]