OEIS Keywords

[Joerg Arndt]

Just a few comments, uncommented text removed.

* franktaw at netscape.net <franktaw at netscape.net> [Aug 23. 2006 10:25]:
> I certainly agree that the current keyword system is a mess in some 
> places.  Herewith my cut on the existing keywords:
> 
> [...]

> dumb: an unimportant sequence
> 
> A judgement call, and one of the most difficult ones.  I don't think 
> this adds any real
> value to the database.

As no sequences are ever removed(?) I find this quite valuable!


> dupe: duplicate of another sequence
> 
> Currently used only for 1 sequence, A048789.  Not really very useful; 
> let the comments
> say it.

Think automation.


> easy: it is very easy to produce terms of sequence
> 
> This is another one with wildly varying usage.  Sometimes this means: 
> "the sequence
> has a simple expression for the Maple combinatorics package"; trying to 
> calculate it by
> hand might take hours.

I hope "easy" is never applied in such cases.

>  I don't think this one adds much value, either.

Automation again: As a flag to not consider giving
more terms (especially a b-file).


> frac: numerators or denominators of sequence of rationals
> 
> Simple and useful.  I would like some way to formally tie the two 
> sequences, so that
> a program could generate the fractions.

I second that.
More generally, a mechanism to define (and retrieve!) certain
sets of sequences would be useful.  This is partly(?) done
for some sets like sequences about stuff in GF(2).