  In this study, pentaquark Pc(4380) composed of a baryon sigma_c and a D_*
meson is considered. Pentaquark is as a bound state of two-body systems
composed of a baryon and a meson. The calculated potential will be expanded and
replaced in the Schrodinger equation until tenth sentences of expansion.
Solving the Schrodinger equation with the expanded potential of Pentaquark
leads to an analytically complete approach. As a consequence, the binding
energy EB of pentaquark Pc and wave function are obtained. The results EB will
presented in the form of tables so that we can review the existence of
pentaquark Pc. Then, the wave function will be shown on diagrams. Finally, the
calculated results are compared with another obtained results and the mass of
observing pentaquark Pc and the radius of pentaquark are estimated.
