[seqfan] Re: A new and surprisingly hard elementary number theory question

Neil Sloane njasloane at gmail.com
Sun May 7 07:12:53 CEST 2017


Michael,  I think those are all interesting - can you go ahead and submit
them?

Best regards
Neil

Neil J. A. Sloane, President, OEIS Foundation.
11 South Adelaide Avenue, Highland Park, NJ 08904, USA.
Also Visiting Scientist, Math. Dept., Rutgers University, Piscataway, NJ.
Phone: 732 828 6098; home page: http://NeilSloane.com
Email: njasloane at gmail.com


On Sat, May 6, 2017 at 9:16 PM, Michael De Vlieger <mike at vincico.com> wrote:

> Looking at A284597 and A285893 we could write other sequences like this:
>
>
>
> (little) omega (A001221):
>
> {11, 13, 7, 512, 1, 1941, 141, 6847, 211, 195031, 82321, 808083, 534077,
> 3355906, 526093, .}
>
>
>
> (big) Omega (A001222):
>
> {5, 43, 1, 2021, 121, 25202, 2521, 162121, 460801, .}
>
>
>
> Phi (A000010): (I thought I saw something similar already in the database)
>
> {6, 315, 14, 1, .}
>
>
>
> I am not sure how generally interesting these other sequences might be, nor
> am I necessarily proposing to add such into the database. These involve
> related basic elementary number theory functions. Also I might be missing
> "singletons" in the above numbers. These were calculated using a slightly
> different Mathematica code than the ones I added to the two proposed
> similar
> sequences and searched n <= 10^7.
>
>
>
> Michael De Vlieger
>
>
>
>
> --
> Seqfan Mailing list - http://list.seqfan.eu/
>



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