The generating function for a particular class of characters of SU(n)
  We compute the generating function for the characters of the irreducible representations of SU(n) whose associated Young diagrams have only two rows with the same number of boxes. The result is a rational determinantal expression in which both the numerator and the denominator have a simple structure when expressed in terms of Schur polynomials. 
Wifredo Garcia Fuertes, Askold Perelomov (Univ. of Oviedo)