[seqfan] Absolute first differences are a permutation of the primes
Eric Angelini
Eric.Angelini at kntv.be
Fri Oct 1 16:37:49 CEST 2010
Hello SeqFans,
would it be possible to build two sequences A & B such that:
A is a permutation of the non-primes
B is a permutation of the primes
and B shows the absolute first differences of A.
I guess A could start like this (if we extend respectively
A and B with the "smallest available integer not leading to
a contradiction"):
A = 1 4 6 25 20 9 16 33 10 39 8 21
B = 3 2 19 5 11 7 17 23 29 31 13
Not sure this is possible, though...
Best,
É.
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