OEIS Keywords

[N. J. A. Sloane]

Dean asked some questions about whatprecisely
the putative keyword "unpr" (for unproved) would mean.

This is indeed tricky, and in view of Reinhard's subsequent
suggeston to use the Index file, I'm now less enthusiastic
about this keyword.

Using the Index gives us much more flexibility, and avoids
the proliferation of keywords.

We could, for example, have a section of the Index listing sequences
in various classes like this:

conjectured sequences, no terms known for certain: ...........

conjectured sequences, some terms known, others conjectured: ....

etc

Neil