\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}