Counting friezes in type D_n
  We prove that there is an finite number of friezes in type D_n, and we provide a formula to count them. As a corollary, we obtain formulas to count the number of friezes in types B_n, C_n and G_2. We conjecture finiteness (and precise numbers) for other Dynkin types. 
Bruce Fontaine and Pierre-Guy Plamondon
math.CO