[seqfan] Re: Loose ends re Queens' graph
njasloane at gmail.com
Tue Dec 26 02:44:02 CET 2017
Brendan, Good suggestion. I made some changes.
Neil J. A. Sloane, President, OEIS Foundation.
11 South Adelaide Avenue, Highland Park, NJ 08904, USA.
Also Visiting Scientist, Math. Dept., Rutgers University, Piscataway, NJ.
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Email: njasloane at gmail.com
On Mon, Dec 25, 2017 at 7:47 PM, Brendan McKay <Brendan.McKay at anu.edu.au>
> What does "(in general position)" mean in A002564? If it means that there
> 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
>> 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/
> Seqfan Mailing list - http://list.seqfan.eu/
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