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%I #19 Sep 24 2016 13:42:34
%S 1,0,0,0,0,0,0,0,0,4,44,6,78,8,16,18,234,124,468,516,882,2092,7068,
%T 22794,85456,275732,974048,3698242,14120996,59531852,252272512,
%U 1163430462,5229335374
%N Number of ways of placing n nonattacking Queens of the Night on an n X n board.
%C A Queen of the Night can move like a Queen or a Nightrider, which is a rider along straight lines of Knight moves.
%H Noam D. Elkies, <a href="http://www.math.harvard.edu/~elkies/chess.html">Chess Pages and Links</a>.
%H P. Syski, S. J. Wernli, <a href="http://www.people.fas.harvard.edu/~swernli/queenofnight.htm">Queen of the Night on an n X n board</a>.
%H V. Kotesovec, <a href="https://oeis.org/wiki/User:Vaclav_Kotesovec">Non-attacking chess pieces</a>, 6ed, 2013, p. 350.
%H W. Schubert, <a href="http://web.archive.org/web/20130708134012/http://m29s20.vlinux.de/~wschub/nqueen.html">N-Queens page</a>.
%o See C++ code on website.
%Y Cf. A051223, A051224, A000170.
%K nonn,hard,more,nice
%O 1,10
%A Stefan Wernli, Peter Syski (swernli(AT)fas.harvard.edu), Jan 07 2005
%E Terms a(20)-a(28) from _Vaclav Kotesovec_, Jun 18 2010 and Feb 02 2011
%E Terms a(29)-a(32) from Wolfram Schubert, Jul 24 2011
%E Term a(33) from Wolfram Schubert, May 27 2012
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