Repeated-root constacyclic codes of length 6lp^s

Let \begin{document}$ \mathbb{F}_{q} $\end{document} be a finite field with character \begin{document}$ p $\end{document} and \begin{document}$ p\neq{3},l\neq{3} $\end{document} be different odd primes. In this paper, we study constacyclic codes of length \begin{document}$ 6lp^s $\end{document} over finite field \begin{document}$ \mathbb{F}_{q} $\end{document} . The generator polynomials of all constacyclic codes and their duals are obtained. Moreover, we give the characterization and enumeration of linear complementary dual (LCD) and self-dual constacyclic codes of length \begin{document}$ 6lp^s $\end{document} over \begin{document}$ \mathbb{F}_{q} $\end{document} .