how to look up GF(2), x^2-1, etc..??

[Frank Ellermann]

Edwin Clark wrote:

 [special chars in OEIS word lookup]
> Maybe I have missed something?

For "GF(q" you could try "GF.q", sometimes this trick helps.

For "x^3+x+1" you need grep and a local copy of the database:

%e A071802 x+1, x^2+x+1, x^3+x+1, x^4+x+1, x^5+x^2+1, ...
%N A029826 Inverse of Salem polynomial: 1/(x^10+x^9-x^7-x^6-x^5-x^4-x^3+x+1).
%e A007839 a(3)=4 from x^3+x+1, x^3+x^2+1, x(x^2+x+1), (x+1)(x^2+x+1).
[... more hits deleted ...]

Or you look for the terms 3,11,31,69, that's even better, it
works without local database, and it finds n^3+n+1 (A071568).

                              Bye, Frank