[seqfan] Re: Self-stuffable numbers

[Ray Chandler]

Unfortunately primitive root 21021021021021021021 adds another final digit to your list.

It is self-stuffable and therefore joins the ranks of 22 and 126 in being primitive roots not ending in 0.

Which begs the question why 21021021021021021021 is not in Lars' b-file for A322323.
Ray

> 
> I agree.
> 
> Btw, has anyone an idea how to prove the last digit is always 0,2,6?
> 
> John
> 
> 
> >MFH: "The main challenge is to find larger (primitive) roots, i.e.,
> >terms of
> > A322323 (without repetitions and) with trailing zeros removed.
> >Arbitrarily  many larger terms of A322323 are then computed
> straightforwardly."
> >
> > Lars Blomberg has found 210210210210210210210 to be self-stuffable.
> > While it is trivially true that it could have been computed from the
> > primitive root 21021021021021021021, I don't believe that a b-file for
> > A322002 with terms that large is in the offing.
> 
> Ditto 52000005200000520000 with primitive root 5200000520000052 in Lars'
> new b-file for A322323.
> Ray
> 
> 
> 
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