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%I #14 Apr 10 2020 02:12:10
%S 0,2,18,88,250,558,1078,1888,3078,4750,7018,10008,13858,18718,24750,
%T 32128,41038,51678,64258,79000,96138,115918,138598,164448,193750,
%U 226798,263898,305368,351538,402750,459358,521728,590238,665278,747250,836568,933658,1038958
%N Number of ways to place 2 non-attacking wazirs on an n X n toroidal board.
%C A wazir is a leaper [0,1].
%H V. Kotesovec, <a href="https://oeis.org/wiki/User:Vaclav_Kotesovec">Non-attacking chess pieces</a>, 6ed, p.402
%F a(n) = n^2*(n^2-5)/2, n>=3.
%F G.f.: 2*x^2 * (2*x^5 - 9*x^4 + 15*x^3 - 9*x^2 - 4*x - 1)/(x-1)^5.
%Y Cf. A172225, A201237, A201238, A201239, A201240, A201241, A201242.
%K nonn
%O 1,2
%A _Vaclav Kotesovec_, Nov 28 2011
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