If you’re looking to add an entry counter to your next/previous entry navigation like so < 15/50 > follow the example below.
• you’ll need to customize a bit for things like status, path, and segment
• “segment_3” should be your last segment {segment_2} or {last_segment} etc., the one with your entry title
• make sure you have your entries to display by title permalink
<ul class="portfolio-pagination">
{exp:channel:next_entry channel="work" status="flagship|open"}
<li class="prev"><a href="http://{path=%27work/show%27}" class="button medium no-bg"><span class="arrow left">»</span></a></li>
{/exp:channel:next_entry}
{exp:channel:entries channel="work" status="flagship|open" dynamic="no"}
{if url_title == segment_3}<li>{count} / </li>{/if}
{/exp:channel:entries}
{exp:channel:entries channel="work" dynamic="no" status="flagship|open"}
{if count == 1}<li>{absolute_results}</li>{/if}
{/exp:channel:entries}
{exp:channel:prev_entry channel="work" status="flagship|open"}
<li class="next"><a href="http://{path=%27work/show%27}" class="button medium no-bg"><span class="arrow">»</span></a></li>
{/exp:channel:prev_entry}
</ul><!-- end .portfolio-pagination -->