Some topological indices of pentagonal double chains

In graph theory, lattices are used when some structural part of the repeats itself finitely or infinitely many times. They have applications in complex analysis and geometry mathematics, also natural chemical theory. As a lattice can be taken as graph, it is possible to use them study large networks. Recently, topological indices pentagonal chains studied here, we double similarly that work. We make vertex edge partitions these graphs calculate their by means combinatorial methods.