User blog comment:Syst3ms/Breadth-Recursive Array Notation (BRAN)/@comment-25601061-20180424215049/@comment-30754445-20180425200758

By the way, there's a really cool trick you can use with your notation, that will get you to ωx2 without the need of up arrows.

Can you find it?

Hint: Add another array function C(x,y,z,...).

Hint 2: Remember, you've already succeded in building an ω-level function. Use it.