\[M\left(\nu+\tfrac{1}{2},2\nu+1+n,2z\right)=\Gamma\left(\nu\right){\mathrm{e}}^%
{z}\left(\ifrac{z}{2}\right)^{-\nu}\sum_{k=0}^{n}\frac{{\left(-n\right)_{k}}{%
\left(2\nu\right)_{k}}(\nu+k)}{{\left(2\nu+1+n\right)_{k}}k!}I_{\nu+k}\left(z%
\right),\]