%% 
%%  A DANTE-Edition example
%% 
%%  Example 02-03-12 on page 36.
%% 
%%  Copyright (C) 2010 Herbert 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.
%% 
%% 
%% ==== 
% Show page(s) 1
%% 
\documentclass[]{article}
\pagestyle{empty}
\setlength\textwidth{201.70511pt}
\setlength\parindent{0pt}
\renewcommand\arraystretch{1.1}

\usepackage{multirow,bigdelim}

\begin{document}
\begin{tabular}{lll}
 & 0 &\ldots\\
\ldelim\{{6}{1.9cm}[if $f(n)=$]
 & 1 & then do\ldots\\
 & 2 & then do\ldots\\
 & 3 & then do\ldots\\
 & 4 & then do\ldots\\
 & 5 & then do\ldots\\
 & 6 &\ldots\\
 & 7 &\ldots
\end{tabular}
\end{document}