LaTeX.org

\begin{equation}
X_{ij} =
\begin{cases}
1 & \text{nucleotide i and j are paired} \\
0 & \text{otherwise} \\
\end{cases}
\end{equation}

$\forall$ $1\le i < j \le n$

I currently have an equation with two cases in latex. I want to add a line of text to the right of this equation, centered ...