Help with .htaccess redirect

I need to redirect pages like

http://www.domain.com/article/12345 to http://www.domain.com/page/#/obj12345

12345 could be any number.

What should I write in .htaccess to get开发者_开发百科 this working?

Swfaddress incorporates this kind of behaviour. They use basic .htaccess rules, in combination with php. See http://www.asual.com/swfaddress/samples/ajax/ for an example.