\( \definecolor{colordef}{RGB}{249,49,84} \definecolor{colorprop}{RGB}{18,102,241} \)
Consider the matrix \(\mathbf{A}\) defined as:$$ \mathbf{A}=\begin{pmatrix} 1&3&5 \\ 7&2&6 \\ \end{pmatrix} $$What is the value of the entry \(a_{13}\)?
\(a_{13}=\)