As for HTML Files you should get + picture listing pages plus a copy of page 1
that is the base page (which doesn't have the  "page=1" in the url). 
And 8 copies of each listing page due to the sort + - options and two pages
for each image, the picture page and the sub window page.

That's 169, and I seem to get 169

We can eliminate the sort extras with 
-www.ssoastro.org/coppermine/thumbnails.php?album=16&page=*&sort*

And we could eliminate the copy of page 1 by starting on a number page
"page=1"
and a filter entry since there is a link to the non-page-number version
-www.ssoastro.org/coppermine/thumbnails.php?album=16

But that seems a bit much for some HTML files that were likely just going to
delete.