Constant term solution for an arbitrary number of osculating lattice   paths
  Osculating paths are sets of directed lattice paths which are not allowed to cross each other or have common edges, but are allowed to have common vertices. In this work we derive a constant term formula for the number of such lattice paths by solving a set of simultaneous difference equations. 
R. Brak, W. Galleas
math-ph cond-mat.stat-mech math.CO math.MP