WordPress blog pagination is not working

Hi,
Pagination code of my word press sites blog section looks ok even generates pagination nav with proper links too. But the redirection is not working. Not even by typing on url as /page/2/ lets me to go to the next page rather it force redirect me to the first page only.

You can refer this link to check for the issue http://www.sector45.com/blog/

Please suggest what may be the issue and solution to it.