[seqfan] Re: morphism in A284940 compared with A080580

Neil Sloane njasloane at gmail.com
Wed Apr 26 16:10:30 CEST 2017

Could someone post a message here with a clear proof
that the two sequences are the same?  Then I will
merge the two entries.

By the way, I will add Kevin Ryde's interesting comment
on A189664 to that entry.
Best regards

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 Wed, Apr 26, 2017 at 4:36 AM, Kevin Ryde via SeqFan
<seqfan at list.seqfan.eu> wrote:
> ck6 at evansville.edu (Clark Kimberling) writes:
>> A285820 to A189664
> That A189664 0->010, 1->001 should be parity of how many ternary
> 1-digits below the lowest 0-digit in n-1.  Don't know any particular
> significance to such a count though.  Perhaps you have this already.
> All the fixed-width morphisms must have some digit interpretation, but
> greater or lesser mouthful to write or want to think about :).
> --
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