[seqfan] Re: help needed entering sequences from Iwan Jensen's home page

Olivier Gerard olivier.gerard at gmail.com
Sat Feb 14 10:01:34 CET 2009

Hello Neil,

Jensen & al work seems to me of great relevance to the OEIS
being at the intersection of physics and combinatorics.

I am willing to help, but I think your input will be needed
to coordinate the effort.

There are already many url references to the OEIS on his web pages.

I noticed that one of the staircase polygon sequences was not in the OEIS.
I send it to you privately with a b-file.

I am proposing to look at all missing sequences and gfs in :


which complements and extend

 Exact generating function for 2-convex polygons
<http://stacks.iop.org/JPhysA/41/055001> arXiv:0805.1259.
W. R. G. James, I. Jensen and A. J. Guttmann, J. Phys. A: Math. Theor.
*41*055001 (2008) (26pp)

Is that ok or already undertaken by someone ?

If you have recommendations on the way we link to Jensen's pages,
I will be happy to follow them.


On Sat, Feb 14, 2009 at 08:22, N. J. A. Sloane <njas at research.att.com>wrote:

> Dear Seqfans,  On Nov 08 2008 I appealed to the associate editors for help.
> One person promised to take care of this, but three months have passed
> and nothing has been done, so let me try again!
> Here is what I said:
>  On Iwan Jensen's home page http://www.ms.unimelb.edu.au/~iwan/<http://www.ms.unimelb.edu.au/%7Eiwan/>
> one will find many papers and tables concerned with counting
> problems in condensed matter physics.

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