[seqfan] Re: A055198 comment seems wrong

[Neil Sloane]

The definition of A055198 involves the operation of "add 4 and reverse
digits" (see A003608)

You said: Today I was looking at reproducing A055198 concerning iteratively
reverse
and add 4.

But the order matters!  Start with 6 and you get either 1 or 10.  Could
this explain the disagreement?


Best regards
Neil

Neil J. A. Sloane, Chairman, OEIS Foundation.
Also Visiting Scientist, Math. Dept., Rutgers University,
Email: njasloane at gmail.com



On Mon, Mar 14, 2022 at 10:12 PM Sean A. Irvine <sairvin at gmail.com> wrote:

> Hi,
>
> Today I was looking at reproducing A055198 concerning iteratively reverse
> and add 4.
>
> https://oeis.org/A055198
>
> The first comment seems to imply that the sequence is likely complete, yet
> I find many more terms.
>
> For example, 1011 repeats after 90 iterations and so should be in the
> sequence. No term of the iteration is less than 1011.
>
> Likewise, 1013, 1015, and many other numbers.
>
> Sean.
>
> --
> Seqfan Mailing list - http://list.seqfan.eu/
>