[seqfan] Re: Loose ends re Queens' graph

Brendan McKay Brendan.McKay at anu.edu.au
Tue Dec 26 01:47:21 CET 2017

What does "(in general position)" mean in A002564?  If it means that 
there are
no restrictions on the positions apart from them forming a dominating set,
then I suggest the words be removed.  "General position" is a phrase with
specific meaning for geometric problems and I can't see how it would
apply here.  I suspect that the intention is "not necessarily 
but nobody is going to understand that  without help.

Cheers, Brendan.

On 26/12/17 4:04 am, Neil Sloane wrote:
> Don Knuth wrote yesterday pointing out that whereas A002563 gives 15 terms,
> A002564 gives only 13 terms, and it should not be hard to extend the
> shorter sequence.
> Same thing for A002567 (18 terms) vs A002568 (12 terms only).
> Since some of the people who worked on those sequences are on this list, I
> mention this here.
> --
> Seqfan Mailing list - http://list.seqfan.eu/

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