User blog comment:Nayuta Ito/"I think this is the fastest" function (Part1)/@comment-5150073-20150321131357/@comment-25337554-20150324085437

Sorry, I can't say in math language, but that would be the largest notation in the previous numbers.

x{1}{0}y=x{1}^^^...^^^{1}x (y ^'s)

x{1}{1}y=??? (What should it be? I even don't know.)