The structure of projective indecomposable modules for $A_n$, $n\leq 12$
  This article gives the structure of all projective indecomposable modules in blocks with non-cyclic defect group for $n\leq 11$, and almost all in the case of $n=12$, leaving four simple modules for $p=2$ and one simple module for $p=3$. 
David A. Craven
math.RT