Main Page article involves special content and archives of materials that were once posted on the main page. Yes, the pages are counted under number of pages as they involve very unique and special information that is knowledgeable and provokes scientific temperament.
The pages that you might see mostly involve archived content such as 'Image of the Week', etc. The format of the things on wikia might change in future if the rules and policies change. The page comes under the Wikia Maintenance category.
Pages in category "Main Page"
The following 6 pages are in this category, out of 6 total.