Google index 301s for a while therefore, its completely possible to index shorteners. In fact one of the most interesting things is that one site that is ranking in my niche is a redirect to my own site (it's an agreement I did with the owner). So despite of how bizarre this looks, this 301 to my site has been ranking top 3 for more than 1 year so far.......
Not sure why would you like to do so, but it has some practical uses. But if you are looking for authoritativeness with this, you are losing your time