Most search engines won't index anything redirected. If you want to use a redirect I suggest doing it on your own server and make it a time delayed redirect like 5+ seconds. Not sure if this works anymore but it use to with google. Always better to use nameservers with anything but even that doesn't help much. The search engines know very well if the name is parked or not. Sure they might index the name but don't expect a great deal of traffic from your efforts.