\[\frac{{\mathrm{d}}^{n}}{{\mathrm{d}z}^{n}}\left(e^{\frac{1}{2}z}z^{\mu-\frac{1%
}{2}}W_{\kappa,\mu}\left(z\right)\right)=(-1)^{n}{\left(\tfrac{1}{2}-\mu-%
\kappa\right)_{n}}e^{\frac{1}{2}z}z^{\mu-\frac{1}{2}(n+1)}\*W_{\kappa-\frac{1}%
{2}n,\mu-\frac{1}{2}n}\left(z\right),\]