e/Meixner polynomials

Information
has gloss	eng: In mathematics, Meixner polynomials, named for Josef Meixner, are a family of orthogonal polynomials that are orthogonal with respect to a certain discrete measure. They are in terms of binomial coefficients and the (rising) Pochhammer symbol by :M_n(x,\beta,\gamma) = \sum_k=0}^n (-1)^kn \choose k}x\choose k}k!(x-\beta)_n-k}\gamma^-k}
lexicalization	eng: Meixner polynomials
instance of	e/Orthogonal polynomials