Bilateral generating relations for a function defined by generalized Rodrigues formula (Q5896260)

The authors consider here a sequence of functions \(\{R_ n(x)\}\) defined by means of a Rodrigues' type formula involving the operator \(T_{k;\lambda}=x^ k(\lambda +xD), D=d/dx\) and obtains a bilateral generating function for it following the method developed by the reviewer and \textit{H. M. Srivastava} [Pac. J. Math. 42, 755-762 (1972; Zbl 0217.112)].