html(n=3)={
  print("<table>\n<tr><th></th><th>X</th><th>Y</th><th>Z</th></tr>");
  for(i=1,n,
    print1("<tr><td>"i"</td>");
    for(j=1,3,print1("<td>"random(9999)"</td>"));
    print("</tr>")
  );
  print("</table>")
};