COMPUTING THE EIGENVALUES OF CAYLEY GRAPHS OF ORDER p2q
A graph is called symmetric if its full automorphism group acts transitively on the set of arcs. The Cayley graph $Gamma=Cay(G,S) on group $G$ is said to be normal symmetric if $N_A(R(G)=R(G)rtimes Aut(G,S) acts transitively on the set of arcs of $Gamma$ In this paper, we classify all connected tetravalent normal symmetric Cayley graphs of order $p^2q$ where $p>q$ are prime numbers.