Dual q-Hahn polynomials

In mathematics, the dual q-Hahn polynomials are a family of basic hypergeometric orthogonal polynomials in the basic Askey scheme. give a detailed list of their properties.

Definition
The polynomials are given in terms of basic hypergeometric functions. $$R_n(q^{-x}+\gamma\delta q^{x+1},\gamma,\delta,N|q)={}_3\phi_2\left[\begin{matrix} q^{-n},q^{-x},\gamma\delta q^{x+1}\\ \gamma q,q^{-N}\end{matrix}
 * q,q\right],\quad n=0,1,2,...,N$$