Denisyuk polynomials explained

In mathematics, Denisyuk polynomials De_n(x) or M_n(x) are generalizations of the Laguerre polynomials introduced by given by the generating function$$\backslash displaystyle\; \backslash sum\_^\backslash infty\; t^nM\_n(x)=\backslash frac\; 1\backslash exp-\backslash frac.$$