\[w(x;a,b,\overline{a},\overline{b})p_{n}\left(x;a,b,\overline{a},\overline{b}%
\right)=\frac{1}{n!}\delta_{x}^{n}\left(w(x;a+\tfrac{1}{2}n,b+\tfrac{1}{2}n,%
\overline{a}+\tfrac{1}{2}n,\overline{b}+\tfrac{1}{2}n)\right).\]