Yes. The numbers are excluded because they can't be signaled from the Ref to the Scorekeeper with just one hand. Example" 6 can't be used because it would require a 5 and a 1.
I'm afraid that I had a 'peek' at the leaderboard before I saw your post here, so even though I could definitely use something Wicked Great, I can't "cheat" to get it [:D]