A023681 correct; I was wrong

[David Broadhurst]

RE: my question about

%S A023681 275,283,331,400,448,475,491,507,563,643,688,731,751,775,848,976,
                                                              [???]

Jon Borwein pointed out that

x^4+x^3+3*x-1

gives a number field with discriminant -775.

I was misled by looking only at the discriminant of the polynomial,
which is -3100=-775*4.

I'll remedy the oversight in computing further values.

David Broadhurst