D-optimal matrices of orders 118, 138, 150, 154 and 174

Dragomir Z. Djokovic, Ilias S. Kotsireas

We construct supplementary difference sets (SDS) with parameters $(59;28,22;21)$, $(69;31,27;24)$, $(75;36,29;28)$, $(77;34,31;27)$ and $(87;38,36;31)$. These SDSs give D-optimal d…