$GLOBALS['autoindex']++;

$row['autoindex'] =  $GLOBALS['autoindex']++;

[field:array runphp="yes"]
if(@me['autoindex'] == 1) 
{
@me = <<< TPL
<li><a href="{@me['arcurl']}" class="preview"><img src="{@me['litpic']}"/></a></li>
TPL;
}
else 
{
@me = <<< TPL
<li><a href="{@me['arcurl']}" class="preview">{@me['title']}</a></li>
TPL;
}
[/field:array]