Ground-state energy of jellium

High- and low-density perturbation expansions for the ground-state energy per particle are utilized to analyze the presumably ''exact'' Monte Carlo data for jellium. In view of some controversy in the literature with regard to the values of the last two coefficients in the high-density non-power-series expansion, we extract from the Monte Carlo data values for these coefficients for both paramagnetic and ferromagnetic fluids. Integral approximants are then employed to obtain a representation of the high-density series at all densities. Comparison with the low-density expansion about the Wigner electron crystal renders millirydberg-accuracy agreement with the Monte Carlo data and excellent agreement in the critical density for Wigner crystallization