User blog comment:B1mb0w/Deeply Nested Ackermann/@comment-25337554-20150531035104

Let's see the growth rate...

First, DNA(a,b) is nearly equal to f_a(b).

Next, for DNA(1,b,c),

DNA(1,b,c)=DNA(0,DNA(1,b-1),DNA(1,b,c-1))

I guess it is slightly larger than w+1.