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%I #15 Apr 01 2017 20:08:43
%S 11264,48132,251126,1473764,9434784,64923594,476033636,3694894500,
%T 30179587994,257860425672,2290966142762,21042965606234,
%U 198765197377402,1921681775292272,18940490557328616,189679152583318596,1924757095250611458,19746535064318923758
%N Number of ways to place 10n nonattacking kings on a 20 X 2n cylindrical chessboard.
%C This cylinder is horizontal: a chessboard where it is supposed that rows 1 and 2n are in contact (number of columns = 20, number of rows = 2n).
%H Alex V. Breger, <a href="/A195654/b195654.txt">Table of n, a(n) for n = 1..500</a>
%H Artem M. Karavaev, <a href="http://zealint.ru/koroli-na-cilindricheskoj-doske-predlozhenie.html">Zealint blog</a> (in Russian)
%H V. Kotesovec, <a href="https://oeis.org/wiki/User:Vaclav_Kotesovec">Non-attacking chess pieces</a>
%H Vaclav Kotesovec, <a href="/A195654/a195654_1.txt">Generating function</a>
%F Recurrence order is 916.
%Y Cf. A137432, A195653, A195649, A195659.
%K nonn
%O 1,1
%A _Vaclav Kotesovec_, Sep 22 2011
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