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To improve the routing efficiency of a MANET, two issues need to be investigated: routing table size and path selection from source to destination. Given that routing performance depends on routing table size, which is determined by the number of nodes, a detailed table representation is required. In this study, we propose a triangular routing table representation to improve routing performance. By using a low triangular matrix, routing information can be transferred between nodes more efficiently by using a smaller memory size than the memory size used by conventional routing tables. The proposed routing representation is validated by simulating 25 MANET nodes that are generated randomly by shortest path selection. The simulation shows that the proposed approach significantly reduces the memory size in transfer routing information. Besides, it is proved through using 255 nodes that they require only 3.95 KB …