[seqfan] Peaceable queens: a new sequence and a possible omission in A250000

[Benoît Jubin]

Hi Seq Fans,

In the EXAMPLE field of A250000 (peaceable queens), it is written that for
n=4, there are 8 inequivalent configurations (and they are pictured).
Aren't there two more coming from the configuration of 4 non-attacking
queens on a 4 X 4 chessboard?  This would imply that A260680(4)=10 and not
8.

On a related note, I just submitted A306954, which generalizes A250000 to
the case of k armies on the n X n chessboard.  Computer programs should
easily give some more terms.

Best regards,
Benoît