%%
%% A DANTE-Edition example
%%
%% Beispiel 02-04-5 auf Seite 38.
%%
%% Copyright (C) 2010 H. Voss
%%
%% It may be distributed and/or modified under the conditions
%% of the LaTeX Project Public License, either version 1.3
%% of this license or (at your option) any later version.
%%
%% See
http://www.latex-project.org/lppl.txt for details.
%%
%%Run also: >> <<
% Show page(s) 1
\documentclass[]{article}
\pagestyle{empty}
\setlength\textwidth{170.59192pt}
\setlength\parskip{10pt}
\AtBeginDocument{\setbox0\hbox{$ $}}
\usepackage{blkarray}
\begin{document}
\begin{blockarray}{>{\scriptsize}cccc}
\begin{block}{*{4}{>{\scriptsize}c}}
1 & 2 & 3 & 4\\
\end{block} \begin{block}{>{\scriptsize}c(ccc)}
2 & 22 & 32 & 42\\ 3 & 23 & 33 & 43\\
4 & 24 & 34 & 44\\
\end{block}
\end{blockarray}
\end{document}