Cauchy Integral Experiment

[Kouznetsov]

...It's like "waves" are being emitted from the center and rippling on out toward the ends...
What is wrong?

Mike, there is nothing wrong; you seem to do well.
you can make a beautiful animation with these waves.
I also had the similar waves in first versions of my code.

In order to get convergence and evaluate the tetrational,
update first the even nodes, going from the center to the ends,
and then the odd nodes, going from the ends to the center.
(In my case, the number of nodes is even, so, I can do both in the single loop,
but it is analogy of that I suggest above.)
This dumps the waves you mention.
Please, plot the first few iterations, and post them.