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diff --git a/Master/texmf-dist/doc/latex/lisp-on-tex/tug2013/bench/perltex/tarai.tex b/Master/texmf-dist/doc/latex/lisp-on-tex/tug2013/bench/perltex/tarai.tex
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+++ b/Master/texmf-dist/doc/latex/lisp-on-tex/tug2013/bench/perltex/tarai.tex
@@ -0,0 +1,15 @@
+\documentclass{article}
+\usepackage{perltex}
+\perlnewcommand{\tarai}[3]{
+ if($_[0] <= $_[1]){
+ return $_[1];
+ } else {
+ return latex_tarai(
+ latex_tarai($_[0]-1, $_[1], $_[2]),
+ latex_tarai($_[1]-1, $_[2], $_[0]),
+ latex_tarai($_[2]-1, $_[0], $_[1]));
+ }
+}
+\begin{document}
+ $\mathrm{Tarai}(14,10,6) = \tarai{14}{10}{6}$
+\end{document} \ No newline at end of file