A question on the search engine

[Russ Cox]

> Is there a way to search for not-alphabetical characters,
> i.e., to search strings like "n^n" or "n^3" or "n+p(n)" or even "!!" ?
> 
> That could be useful to find, for example, all the sequences
> related to double factorials, etc.etc.
> 
> It seems to me that presently characters like ! or ^ are simply
> stripped from the query.
> 
> It is not a serious issue, since I can always resort to the good'ol
> grep on the whole database, but I wondered if there was an undocumented
> trick to obtain the result.

no, there isn't a way.  sorry.

russ