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+\documentclass{article}
+\usepackage{lisp-on-tex}
+\lispinterp{%
+ (\define \sq (\lambda (\n) (\* \n \n)))
+ (\define \fact (\lambda (\n) (\lispif (\= \n :0) :1 (\* \n (\fact (\- \n :1))))))
+ }
+\newcommand\sq[1]{\lispinterp{(\texprint (\sq :#1))}}
+\newcommand\fact[1]{\lispinterp{(\texprint (\fact :#1))}}
+
+\begin{document}
+\section{Factorials and Squares}
+ \begin{center}
+ \begin{tabular}{r||rr}\hline\hline
+ $n$ & $n!$ & $n^2$ \\
+ \hline
+ 1 & \fact{1} & \sq{1} \\
+ 2 & \fact{2} & \sq{2} \\
+ 3 & \fact{3} & \sq{3} \\
+ 4 & \fact{4} & \sq{4} \\
+ 5 & \fact{5} & \sq{5} \\
+ 6 & \fact{6} & \sq{6} \\
+ 7 & \fact{7} & \sq{7} \\
+ 8 & \fact{8} & \sq{8} \\
+ 9 & \fact{9} & \sq{9} \\
+ 10 & \fact{10} & \sq{10} \\
+ 11 & \fact{11} & \sq{11} \\
+ \hline
+ \end{tabular}
+ \end{center}
+\end{document} \ No newline at end of file