Base Polynomials for Schultz Invariants of Linear Phenylenes

Abdul Rauf Nizami, Muhammad Aslam Malik, Zahid Mahmood

Let $L_n$ be the molecular graph of linear $[n]$phenylene, and $L_n^{\prime }$ the graph obtained by attaching 4-membered cycles to terminal hexagons of $L_{n-1}$. Thus, $L_n^{\prime }$ is the…