A Note on the Lower Bound for the Ramsey Number \(R(7,9)\)

For integers \( s, t \geq 1 \), the Ramsey number \( R(s, t) \) is defined to be the least positive integer \( n \) such that every graph on \( n \) vertices contains either a clique of order \( s \) or an independent set of order \( t \). In this note, the lower bound for the Ramsey number \( R(7, 9) \) is improved from \( 241 \) to \( 242 \). The new bound is obtained by searching the maximum common induced subgraph between two graphs with a depth variable local search technique.