Denisyuk polynomials

In mathematics, Denisyuk polynomials Den(x) or Mn(x) are generalizations of the Laguerre polynomials introduced by given by the generating function $$\displaystyle \sum_{n=0}^\infty t^nM_n(x)=\frac 1{1+t}\exp-\frac{xt}{1-t}.$$