User blog comment:Syst3ms/Breadth-Recursive Array Notation (BRAN)/@comment-25601061-20180424215049/@comment-30754445-20180426084950

Wait a minute. I'm not so sure the ω2-level attempt doesn't work.

You haven't given an explicit definition for An(a,b,c,....) where there more than 3 numbers. So this part is still open to interpertaiton.

And I have a feeling that Deedlit's interpertation (which is more natural when your post is taken as a stand-alone definition) is different than yours. I also have a feeling that your version does reach ω2.

So, can you explicitly state how we expand An(a,b,c,...) where there are more than three numbers?