[seqfan] Most absurd seq ever? Commas and "1"s

[Eric Angelini]

Hello SeqFans,
please skip this msg if you're not in a joke mood...

P=2,3,5,7,13,23,29,17,31,19,37,41,43,47,53,59,61,67,71,73,79,83,89,97,127,223,137,139,149,227,157,229,163,233,...

P was meant to be the lexico-first seq
showing only primes (and no duplicate
term) where --ahem-- the simultaneous
replacement of every comma by a "1" and every "1" by a comma produces a
seq of non-primes (no duplicates either)!

Indeed (if my hand didn't shiver), P will 
become Q, matching all requirements:

Q=21315171,31231291,713,1,913714,14314715315916,16717,1731791831891971,2712231,371,391,4912271,5712291,6312331...

To compare a few terms of P and Q, look here (fixed font recommanded):

P=2,3,5,7,13,23,29,17,31,19,37,41
Q=21315171,31231291,713,1,913714,

I had in mind to create an "absurd" seq,
which would be impossible to program
on a computer... Now I have my doubts...
Now, if someone with computer
skills had the patience to read so far,
and the will to check (and extend) this
non-sense, I would be delighted, of course!
P.-S.
Just in case: if someone writes the said
program, it might be used to compute
9 more seqs -- the ones where the commas
are replaced by 0,2,3,4,5,6,7,8,9 respectively
and vice-versa.
Sorry for the silly symphony, you were warned!
;-)
Best,
É.
Propulsé d'un aPhone