A019318 ? (Sorry - figured it out.)
Brendan McKay
bdm at cs.anu.edu.au
Tue May 27 09:52:25 CEST 2003
* Jim Nastos <nastos at cs.ualberta.ca> [030527 08:40]:
>
> Sorry, folks:
>
> > If we assume nonisomorphic configurations, I don't see N=3 being 16.
>
>
> I now see N=3 as being 16, so this is probably the correct
> interpretation. But I still think the use of "queens" is irrelevant and
> perhaps misleading (as I came across this sequence when showing someone
> else how OEIS can be used to find the number of solutions to the
> non-attacking queens problem.)
I agree with you about "queens", that really must go. I suggest
"Inequivalent ways of choosing n squares of an n x n chessboard,
considering rotations and reflections."
It should be a piece of cake to find an exact formula using
Burnside's Lemma, but I'll give someone else the pleasure.
Brendan.
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