="computeroutput">BOOST_PROTO_A_ref(<em class="replaceable"><code>N</code></em>)</code> generates sequences like:
      </p>
<p>
        </p>
<pre class="programlisting"><span class="identifier">A</span><sub><span class="number">0</span></sub> <span class="special">&amp;</span><span class="special">,</span> <span class="identifier">A</span><sub><span class="number">1</span></sub> <span class="special">&amp;</span><span class="special">,</span> &#8230; <span class="identifier">A</span><sub><span class="ident