%chompc.tex: 
%%a Plain TeX file by Shalosh B. Ekhad and Doron Zeilberger (x pages)

%begin macros
\def\L{{\cal L}}
\baselineskip=14pt
\parskip=10pt
\def\halmos{\hbox{\vrule height0.15cm width0.01cm\vbox{\hrule height
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\def\frac#1#2{{#1 \over #2}}
%\headline={\rm  \ifodd\pageno  \RightHead  \else  \LeftHead  \fi}
%\def\RightHead{\centerline{
%Title
%}}
%\def\LeftHead{ \centerline{Doron Zeilberger}}
%end macros
\centerline
{\bf   Two Computational Challenges About Chomp}
\bigskip
\centerline
{\it Shalosh B. EKHAD and Doron ZEILBERGER}
\bigskip
\qquad\qquad\qquad\qquad {\it Dedicated to Richard K. Guy (b. Sept. 30, 1916) in honor of his forthcoming 102th birthday}



$$
\matrix{
0 & 1 \times 1 & 1 \times 2 & 1 \times 3 & 1 \times 4 & 1 \times 5 &  1 \times 6 & 1 \times 7 & 1 \times 8 & 1 \times 9 & 1 \times 10 
& 1 \times 11 & 1 \times 12 & 1 \times 13}
$$

\end
