[seqfan] Re: The first differences of S are the prime numbers of S

[Eric Angelini]

Hello SeqFans,
Douglas McNeil, David Newman and Alois Heinz have answered -- many 
thanks to them:
http://www.cetteadressecomportecinquantesignes.com/FirstDiffPrimes.htm

The equivalent sequence where "primes" is replaced by "non-primes" is
here:
http://www.cetteadressecomportecinquantesignes.com/FirstDiffNonPrimes.htm

Best,
É.