Remove squarefull levels from browse

lmfdb/maass_forms/templates/maass_browse.html

@@ -11,7 +11,7 @@ <h2>Browse </h2>
   <tr>
     <td>By {{KNOWL('mf.maass.mwf.level', 'level')}}:</td>
     <td>
-      {% for N in range(1,10) %} <a href="?level={{N}}">{{N}}</a>&nbsp;&nbsp; {% endfor %}
+      {% for N in (1, 2, 3, 5, 6, 7, 10) %} <a href="?level={{N}}">{{N}}</a>&nbsp;&nbsp; {% endfor %}
       <a href="?level=11-20">11-20</a>&nbsp;&nbsp;
       <a href="?level=11-20">21-50</a>&nbsp;&nbsp;
       <a href="?level=21-100">51-105</a>&nbsp;&nbsp;