<?php
$listlength = 99; // number of terms to show.
 
$vocabulary_id = 18; // VID of the vocabulary that you need to index
 
$result = db_query_range(db_rewrite_sql("SELECT d.tid, d.name, MAX(n.created) AS updated, COUNT(*) AS count FROM {term_data} d INNER JOIN {term_node} USING (tid) INNER JOIN {node} n USING (nid) WHERE d.vid = $vocabulary_id AND n.status = 1 GROUP BY d.tid, d.name ORDER BY name ASC"), 0, $listlength);
 
$items = array();
while ($category = db_fetch_object($result)) {
    $items[] = l($category->name .' ('. $category->count .')', 'taxonomy/term/'. $category->tid) .'<br />';
  }
 
print theme('item_list', $items);
?>