[seqfan] Re: Two make a palindrome

[Neil Sloane]

Maximilian said:
"I propose the sequence as https://oeis.org/draft/A228407 where I added a
link to Rob's post/calculations, and also a list of "records of
minima", i.e., (n,a(n)) where the least missing integers occur. Maybe
these could become sequences on their own (the values and the indices
separately)
if further investigations in that sense are to be made."
Yes, that would be a very good idea - could you possibly add those two
sequences?
So here - like Recaman's A005132 - we have a sequence that may or may not
contain every number!
Thanks!  Neil


On Sat, Nov 9, 2013 at 7:54 PM, Maximilian Hasler <
maximilian.hasler at gmail.com> wrote:

> Rob, Eric, SeqFans,
> I propose the sequence as https://oeis.org/draft/A228407 where I added
> a link to Rob's post/calculations, and also a list of "records of
> minima", i.e., (n,a(n)) where the least missing integers occur. Maybe
> these could become sequences on their own (the values and the indices
> separately) if further investigations in that sense are to be made.
> Regards,
> Maximilian
>
> > Le 9 nov. 2013 à 17:10, "Rob Arthan" <rda at lemma-one.com> a écrit :
> >
> >> Eric,
> >>
> >> That's a fun sequence and an interesting conjecture. As you say, it is
> not easy to calculate by hand. To get a feel
> >> for the conjecture I wrote an ML program to do it. This is what I got
> for the first 200 values:
> (...)
> >> My program is now in a loop printing out n, a(n) and m(n). The evidence
> currently supports your conjecture but m(n) is
> >> growing quite slowly:
> >>
> >>   a(5846) = 589, m(5846) = 598
> >>   a(5847) = 598, m(5846) = 679
> >>   ...
> >>   a(11539) = 1617, m(11539) = 679
> >>   a(11540) =  679 m(11540) = 697
> >>
> >> So 697 persisted as the smallest missing integer for more than 5,000
> stages. I will leave it running and report back if anything noteworthy
> occurs.
> >>
> >> Regards,
> >>
> >> Rob.
> >>
>
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>
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>



-- 
Dear Friends, I have now retired from AT&T. New coordinates:

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.
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