an> i=n,1,-1</div>
<div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;    sum=b(i)</div>
<div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;    <span class="keywordflow">if</span>(i.lt.n) <span class="keywordflow">then</span></div>
<div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;      <span class="keywordflow">do</span> j=i+1,n</div>
<div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;        sum=su