%#!lualatex
\documentclass{minimal}
\usepackage[a4paper,margin=0pt]{geometry}
\usepackage{tikz}
\usepackage{fontspec}
\setmainfont{OpenSans-ExtraBold}
\newcount\cntlot
\cntlot=1
\def\printlots{%
\noindent\hspace*{-2.8mm}\vspace*{-.2mm}
\begin{tikzpicture}[x=26.25mm,y=37.125mm]
  \foreach \x in {1, 2, ..., 7}{
    \draw (\x, 0) -- ++ (0, -\paperheight);
    \draw (0, -\x) -- ++ (\paperwidth, 0);
  }
  \foreach \y in {0, 1, ..., 7}{
    \foreach \x in {0, 1, ..., 7}{
      \node at (\x.5, -\y.5) {\the\cntlot};
      \global\advance\cntlot1
    }
  }
\end{tikzpicture}
\clearpage
}
\begin{document}
\fontsize{28}{0}\selectfont
\printlots\printlots\printlots\printlots\printlots
\printlots\printlots\printlots\printlots\printlots
\end{document}