# [seqfan] Re: On Formulas

Olivier Gerard olivier.gerard at gmail.com
Thu Dec 3 20:18:18 CET 2009

```Dear Maximilian,

I think you must consider this idea in the perspective of the OEIS Wiki.

We can have in each relevant sequence article a formula section (this is
already the case) but with
a preformated model and a standard order, which can look like a table
displaying typeset formulae for instance in front of formula types as
suggested by Frank
.
This kind of approach is routinely used in parts of Wikipedia for things
such as Atomic Elements, Countries, and other categories where
multiple possible attributes are known and have to be collected in
a systematic manner.

For instance look at the table on the right of this article:
http://en.wikipedia.org/wiki/Uranium

Olivier

On Thu, Dec 3, 2009 at 14:50, Maximilian Hasler
<maximilian.hasler at gmail.com> wrote:
> I agree that this would be useful, but maybe it cannot be done in the
> current/ old system of "tags" (1-letter code), probably most among
> a-z, A-Z are already used....
> so the current (already "existing") system of "subdivision" is
>
> %F a(n) = ... (for direct formula)
> %F a(n+1) = ... (for recursion)
> %F o.g.f. = ...
> %F e.g.f. = ...
> %F Annn = { n | .... }
>
> The software displaying the entries could very easily do some
> additional formatting (descriptive label in column 1, separate table
> row...)
> if authors respect that format.
>
> Maximilian
>
> On Thu, Dec 3, 2009 at 6:12 AM,  <franktaw at netscape.net> wrote:
>> One thing I've thought would be nice for some time is to subdivide the
>> formulas section.  What I'm thinking of is separate entries for direct
>> computation, recursive computation, ordinary generating function,
>> exponential generating function, Dirichlet generating function,
>> asymptotic behavior, and other formulas.
>>
>> Franklin T. Adams-Watters
>>
>>
>> _______________________________________________
>>
>> Seqfan Mailing list - http://list.seqfan.eu/
>>
>
>
> _______________________________________________
>
> Seqfan Mailing list - http://list.seqfan.eu/
>

```