  Graph theory has provided a very useful tool, called topological indices
which are a number obtained from the graph $G$ with the property that every
graph $H$ isomorphic to $G$, value of a topological index must be same for both
$G$ and $H$. In this article, we present exact expressions for some topological
indices of k-th subdivision graph and semi total point graphs respectively,
which are a generalization of ordinary subdivision and semi total graph for
$k\ge 1$.
