Abstract
The exact N dependence is given for the first N − 1 virial coefficients calculated for a system with a finite number, N, of particles in the isobaric‐isothermal ensemble. When the specific volume v=V/(N+1) is expanded as a power series in z=p/kT, it is shown that the first N − 1 coefficients are linear functions of (N+1)−1. The explicit results are given for the first six coefficients.