  Building on our previous works on perturbative solutions to a Schwinger-Dyson
for the massless Wess-Zumino model, we show how to compute 1/n corrections to
its asymptotic behavior. The coefficients are analytically determined through a
sum on all the poles of the Mellin transform of the one loop diagram. We
present results up to the fourth order in 1/n as well as a comparison with
numerical results. Unexpected cancellations of zetas are observed in the
solution, so that no even zetas appear and the weight of the coefficients is
lower than expected, which suggests the existence of more structure in the
theory.
