D-optimal (0,1)-weighing designs for eight objects

Let G(m,n)=max{detWTW|W∈Mm,n(0,1)}. A matrix W∈Mm,n(0,1) with detWTW=G(m,n) is called D-optimal. Here we determine G(m,8) for m large with the help of a variation of Mitchell’s DETMAX algorithm, and describe the D-optimal examples.