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Place n queens on an n X n board so as to leave the maximal number of unattacked squares; sequence gives number of different solutions.
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%I #10 Mar 10 2019 13:23:40

%S 1,2,16,25,1,3,38,7,1,1,2,7,1,4,3,1

%N Place n queens on an n X n board so as to leave the maximal number of unattacked squares; sequence gives number of different solutions.

%H <a href="https://web.archive.org/web/20090226224221/http://www.cli.di.unipi.it/~velucchi/queens.txt">Source</a>

%Y Cf. A001366.

%K nonn

%O 1,2

%A Mario Velucchi (mathchess(AT)velucchi.it)