[seqfan] Re: A000108(n) ≡ 1 (mod 6)

L. Edson Jeffery lejeffery2 at gmail.com
Mon Dec 7 08:03:44 CET 2015


Emmanuel,

You wrote:

"The periodicity statement is equivalent with the statement that 2 is a
primitive root modulo 3^n for every n. That seems rather easy to prove."

I have been staring at this for twelve hours trying to work through it with
no success. Would you please post the proof here?

Ed Jeffery


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