I have some pages on my website www.acethem.com which are having 301 redirection but they are not actually 301 redirects. e.g. www.acethem.com/pastpapers/by-year/2007/ is seen as a 301 redirection to www.acethem.com/pastpapers/by-year by google (I am using "Fetch as google" in webmaster tools.
Now more weird: My paginated pages with page >= 10 are all redirected to homepage:
http://www.acethem.com/pastpapers/o-level/chemistry/page/9/ is working properly in google crawler.
Note that all these pages work fine with no redirect in browsers.
Sidenote: on www.acethem.com/pastpapers/by-year/2007/, the facebook share button also points to www.acethem.com/pastpapers/by-year/.