[seqfan] Re: Creighton's sequence A117153 should not be deleted

Robert Munafo mrob27 at gmail.com
Sun Jan 9 21:29:21 CET 2011

My main web page on the floretions is here:


A lot of what I wrote a couple years ago while I was decoding CKD's work is


At the time I also thought A124856 (http://oeis.org/A124856) sounded really
great, but now my ears seem to have changed and it no longer sounds as
interesting (I do have the old midi file and I just verified it really is
the same song... You have to wait about 3 1/2 minutes before it even reaches
the complexity of the early Philip Glass :-)

To generate either A124856 or the missing A117153, we would need the full
FAMP formula or the syllables (and their definitions). FAMP is CKD's program
"floretion algebra manipulation program" and his "syllables" are functions
used as building blocks for a recurrence relation formula.

I did a lot of work a year ago on this and corresponded with CKD, and at the
time I think we figured out that most of the exact definitions were lost.
Someone would need to conduct new research. I thought of making an automatic
search program using many combinations of the operators ("syllables") to
auto-generate FAMP formulas and locate a desired sequence, but it took too
much work and I had to move on to other projects (notably A005646
with Andrew Weimholt, see http://mrob.com/pub/math/seq-a005646.html , and
Sloandora, http://mrob.com/pub/math/sloandora/index.html).

On Sun, Jan 9, 2011 at 11:06, Creighton Kenneth Dement <
creighton.k.dement at mail.uni-oldenburg.de> wrote:

> Hi Neil and friends,
> Are we talking about the sequence which was once labled "Candidate for
> OEIS Theme song"? If I remember correctly, a few years ago I suggested the
> OEIS should have its own Theme song and sent that in as an example from a
> batch of thousands with similar properties. There were also a few
> sequences which you took directly from my old website and entered into the
> OEIS- I certainly didn't have a problem with that, I just didn't have time
> to provide definitions for every one: those sequences were essentially
> meant to be examples of playing with or adjusting (depending on your point
> of view) algorithm settings.
> I currently know of no way to reconstuct that exact sequence- that's the
> bad news- the good news is that I should be able to show anyone with
> interest and patience (see note below) how to construct sequences which
> are very similar to that one (for example, with nice musical properties).
> Note: In contrast to a few years ago where I had a lot of free time
> because I only worked part time, I now work full-time during the week and
> get the kids on the weekend. Therefore, it takes me a lot longer to spend
> time on my "floretion hobby" and get back to people with email than it
> used to. Unfortunately, my other great hobby, Tango dancing, has similarly
> taken a direct hit for the time being.
> Sincerely,
> Creighton
> > Folks, If you click on "Music"
> > at the foot of any OEIS page, you will see
> > that A117153 is mentioned there, since it sounds
> > pretty nice.
> >
> > So I would be sorry to have it vanish from the OEIS.
> >
> > Can we please try to reconstruct the definition?
> >
> > Neil

  Robert Munafo  --  mrob.com
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