[seqfan] Re: A000108(n) ≡ 1 (mod 6)

Emmanuel Vantieghem emmanuelvantieghem at gmail.com
Mon Dec 14 16:30:44 CET 2015

Correction : I did not stated that as a conjecture.  According to the
information that can be seen in Guy's Unsolved Problems in Number Theory,
B33 (p. 135) this must have been known by Erdös.
You can see this also when you click on the following link :


(this is the article tho which Guy refers).
Besides, I had also an easy proof in mind.


2015-12-03 18:25 GMT+01:00 L. Edson Jeffery <lejeffery2 at gmail.com>:

> Oh, you are correct, William.
> I formally apologize here to Emmanuel Vantieghem and acknowledge that it is
> indeed his conjecture.
> I submitted some related sequences (A265100, A265104, A265159, A265161) in
> which I made the same mistake at least once, so I'll make the corrections
> to comments and links later today. Thank you for pointing that out to me.
> Ed Jeffery
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