\documentclass{jarticle}
\usepackage{amsmath,amsthm,amssymb}

\newcommand{\bs}{\symbol{'134}}
\newcommand{\cmd}[1]{\texttt{\def\{{\char`\{}\def\}{\char`\}}\bs#1}}

\begin{document}

\begin{tabular}{lll}
\hline
\multicolumn{1}{c}{�ړI}&\multicolumn{1}{c}{�R�}���h}&\multicolumn{1}{c}{��}\\
\hline
�R���}�̊�&\cmd{dotsc}&$A_1,A_2,\dotsc, A_n$\\
���Z�q�̊�&\cmd{dotsb}&$A_1+A_2+\dotsb+ A_n$\\
�ς̊�&\cmd{dotsm}&$A_1A_2\dotsm A_n$\\
�ϕ��L���̊�&\cmd{dotsi}&$\int_{A_1}\int_{A_2}\dotsi \int_{A_n}$\\
���̑�&\cmd{dotso}&$n=1,2,\dotso$\\
\hline
\end{tabular}

\medskip

\begin{tabular}{llll}
\hline 
\multicolumn{4}{c}{����_}\\
\hline
\cmd{dotsc}&$12\dotsc n$&$n=1,2,\dotsc ,n$&$A_1,A_2,\dotsc, A_n$\\
\cmd{dotsb}&$12\dotsb n$&$n=1,2,\dotsb ,n$&$A_1,A_2,\dotsb, A_n$\\
\cmd{dotsm}&$12\dotsm n$&$n=1,2,\dotsm ,n$&$A_1,A_2,\dotsm, A_n$\\
\cmd{dotsi}&$12\dotsi n$&$n=1,2,\dotsi ,n$&$A_1,A_2,\dotsi, A_n$\\
\cmd{dotso}&$12\dotso n$&$n=1,2,\dotso ,n$&$A_1,A_2,\dotso, A_n$\\
\hline
\end{tabular}

\end{document}
