- --- In primenumbers@yahoogroups.com,

"mikeoakes2" <mikeoakes2@...> wrote:

> I believe the Lemma, but not my proof

Courage, mon brave: the proof is fine.

> 19 does not divide (12*n^2+6*n+1)

It does when n = 1 :-)

David - --- In primenumbers@yahoogroups.com,

"djbroadhurst" <d.broadhurst@> wrote:

> primes p in

This is now a conjecture-free OEIS sequence:

> http://www.research.att.com/~njas/sequences/A068209

> for which (x+1)^p-x^p-1 and x^x+(x+1)^(x+1)

> are never simultaneously divisible by p^2.

http://www.research.att.com/~njas/sequences/A165284

David