If you want a clue about what I expect, consider this. We have seen that the well ordered suite can be obtained by means of perm() after a certain amount of iterations. This is because permutations are cyclic. Now each permutation then has a certain cyclic value. I can imagine that a particular means of obtaining "n012.." could make use of this cyclic value and thus the rule might look like: For any permutations x and y, if x has a cyclic value of (max cyclic value for the base) and y (medium cyclic value for the base) then "n012.." can be obtained by the following composition of perm()...
But this is just imagination about what I would like to know.
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