[seqfan] Re: Sequences with nice graphs / "Entanglement permutations"

[Neil Sloane]

Kevin,
Please feel free to add those pictures to the Index entry (in the Gra
section)
and also to add the keyword "look" to each of the sequences you mention!
Neil


On Sun, Jan 26, 2014 at 5:21 PM, Kevin Ryde <user42 at zip.com.au> wrote:

> njasloane at gmail.com (Neil Sloane) writes:
> >
> > Paul Tek ... lacework: A003987
>
> Would that be labelled Sierpinski triangle too, as a further hint?
> A003986 bitwise-or is more skewed.  A080098 is on the upper side.
> Others A004198 A080099.
>
> antti.karttunen at gmail.com (Antti Karttunen) writes:
> >
> > BTW, anybody invents a good visual category for this one:
> > http://oeis.org/A233270/graph ?
> > I would not place it under "bounces", like the elegant
> > http://oeis.org/A162499/graph
>
> The Stern diatomic A007305 and friends have blob shapes but with low
> values too.  The Fibonacci diatomic A000119 similarly and with some
> regularity down low.
>
> Other random possibilities:
>
> Collatz 3n+1 steps A006667 (and its numerous variations) make a pattern
> in the scatter plot, as per for example the graphs in the mathworld
> link.
>
> A grid is made by A136414 all numbers taken 2 digits at a time, and
> similar A193431 A193492.  I suppose patterns like that and the
> "alternating: A108620" could almost be cooked up deliberately by
> interleaving some desired lines.
>
> A100002 by David Madore which I call "repeated replace" for want of a
> better name has little tendrils going down from its dominant parabolas,
> as per the a-file in the entry there (and original posted
> http://www.madore.org/~david/.misc/seq.png ).
>
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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.
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