We point out that a newly introduced recursive algorithm for lattice p
olymers has a much wider range of applicability. In particular, we app
ly it to the simulation of off-lattice polymers with Lennard-Jones pot
entials between non-bonded monomers and either delta or harmonic poten
tials between bonded monomers. Our algorithm allows particularly easy
calculations of the free energy, and seems in general more efficient t
han other existing algorithms.