gmane.comp.mathematics.maxima.general

andre maute | 8 Sep 10:06

sloane's integer sequences and maxima

wouldn't it be nice to optionally ship a version
of sloane's integer sequences with maxima?

see url:
http://www.research.att.com/~njas/sequences/Seis.html

and have a function ala

identify_integer_sequence([a1,a2,a3,...] )

which gives some information of similar sequences.

I'm working most the time offline,
and that would be a cool feature for maxima,

The sequences are available in two gzip archives (12 megs).

Andre

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Alexey Beshenov | 8 Sep 10:44

Re: sloane's integer sequences and maxima

On Monday 08 September 2008 12:06:42 andre maute wrote:
> wouldn't it be nice to optionally ship a version
> of sloane's integer sequences with maxima?
>
> see url:
> http://www.research.att.com/~njas/sequences/Seis.html
>
> and have a function ala
>
> identify_integer_sequence([a1,a2,a3,...] )
>
> which gives some information of similar sequences.
>
> I'm working most the time offline,
> and that would be a cool feature for maxima,
>
> The sequences are available in two gzip archives (12 megs).

Nice idea!

Maybe I'll try to implement it.

As far as I know, now there is a Scheme implementation: 
http://eisseeker.sourceforge.net/

--

-- 
Sweetmorn, Bureaucracy 32, 3174 YOLD
Alexey Beshenov http://beshenov.ru/

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Mike Hansen | 8 Sep 10:55

Re: sloane's integer sequences and maxima

> As far as I know, now there is a Scheme implementation:
> http://eisseeker.sourceforge.net/

There is also a Python interface to Sloane's database in Sage:
http://www.sagemath.org/hg/sage-main/file/69d774a64568/sage/databases/sloane.py

--Mike

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Robert Dodier | 13 Sep 16:04

Re: sloane's integer sequences and maxima

On 9/8/08, andre maute <andre.maute <at> gmx.de> wrote:

> wouldn't it be nice to optionally ship a version
>  of sloane's integer sequences with maxima?

It makes sense to me to include in Maxima an interface to
a local copy of the archive or the web site if there is no local
archive.

The database format seems to be pretty simple so I think it
should be straightforward to create an interface, in Lisp or
maybe even in Maxima.

>  The sequences are available in two gzip archives (12 megs).

>From the description at their web site
http://www.research.att.com/~njas/sequences/Seis.html
the 12 M of gzipped stuff comprises only the sequences
and their names and identification tags, so I guess the
complete database with all the ancillary information is much
larger.

I think even the 12 M abbreviated database is too large to package
in Maxima. The abbreviated and complete databases should be
separate packages, I'm pretty sure.

best

Robert Dodier

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