[seqfan] Re: Integears (2)

M. F. Hasler seqfan at hasler.fr
Sun Jan 10 15:33:18 CET 2016


On Sun, Jan 10, 2016 at 5:14 AM, Eric Angelini <Eric.Angelini at kntv.be>
wrote:

> ... such chains are also possible with
> "integears-additive" rules:
>
> IG=1,10,109,1090909090909090909090909,...
>
> Take the last term (109...09) and compute I-O, you'll get the term before
> it (109);
> do the same with 109 and you will get 10


er.... neither 109-19 nor 19 - 0 is 10 ... or did I get it wrong?

and why not chains E-O or O-E ? loops ?

idem for products (cf A080464 <https://oeis.org/A080464>). fixed points ?

PS:

See A267086 <https://oeis.org/A267086> for an extended version of Eric
Angelini's "integears" A267085 <https://oeis.org/A267085>.

Sequence A263314 <https://oeis.org/A263314> is a subsequence.

See also A080463 <https://oeis.org/A080463>, A080464
<https://oeis.org/A080464> and A080465 <https://oeis.org/A080465>.

Nice Sunday to all !
 - Maximilian


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