Newer Perls have some fancy features in the regex engine (apart from embedding Perl), so probably it could be solved.

But be warned, I wouldn't be surprised if a solution to this "puzzle" would proof the engine to be Turing complete.

Cheers Rolf
(addicted to the Perl Programming Language and ☆☆☆☆ :)
Je suis Charlie!

In reply to Re: Puzzle Regex: Letter Frequency Arithmetic Sequence by LanX
in thread Puzzle Regex: Letter Frequency Arithmetic Sequence by QM

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