If like many other people you use the excellent Widget Logic to control which URLs your sidebar content displays on, this may come in handy for you.
How do I know this?
I just spent a solid 2 hours looking for it myself!
If you want content to appear on the homepage only the code to enter into the Widget Logic field is:
Everyone knows that though, right?
Well, if you display your latest posts on the homepage and only want a particular widget to display on the front page not paginated versions e.g.
Then the code you need is this:
is_home() && $post==$posts && !is_paged()
Hope that helps someone out!
Ping me a comment if you make good use of it. Always cool to know.