  The pseudopotential theory is extended to the Bogoliubov-de Gennes equations
to determine the excess energy when one atom is added to the trapped superfluid
Fermi system with even number of atoms. Particular attention is paid to systems
being at the Feshbach resonance point. The results for relatively small
particle numbers are in harmony with the Monte-Carlo calculations, but are also
relevant for systems with larger particle numbers. Concerning the additional
one quasiparticle state we define and determine two new universal numbers to
characterize its widths.
