You can create it on temdb and use it from any other database by using the 3-part name (tempdb.dbo.Tally)
Luis C.
General Disclaimer:
Are you seriously taking the advice and code from someone from the internet without testing it? Do you at least understand it? Or can it easily kill your server?
How to post data/code on a forum to get the best help: Option 1 / Option 2