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%I #10 Nov 24 2018 08:11:46
%S 49,308,1945,12281,77537,489543,3090834,19514643,123209858,777911692,
%T 4911511266,31009873218,195787443967,1236145757310,7804669708967,
%U 49276445682891,311117342524943,1964305653103961,12402062409962968
%N Number of (n+1) X (2+1) 0..1 arrays with no 2 X 2 subblock having the sum of its diagonal elements less than the absolute difference of its antidiagonal elements.
%H R. H. Hardin, <a href="/A250967/b250967.txt">Table of n, a(n) for n = 1..210</a>
%F Empirical: a(n) = 8*a(n-1) - 13*a(n-2) + 17*a(n-3) - 14*a(n-4) + 3*a(n-5).
%F Empirical g.f.: x*(49 - 84*x + 118*x^2 - 108*x^3 + 24*x^4) / ((1 - x)*(1 - 7*x + 6*x^2 - 11*x^3 + 3*x^4)). - _Colin Barker_, Nov 24 2018
%e Some solutions for n=4:
%e 1 1 0 0 1 0 1 0 1 1 1 0 1 0 1 1 1 1 1 1 1
%e 1 0 1 1 0 0 1 1 1 1 1 1 1 0 1 0 0 1 0 0 0
%e 0 1 1 0 1 1 1 0 1 1 1 1 0 1 1 0 1 0 1 1 1
%e 0 1 0 1 1 0 0 1 0 1 1 0 0 1 1 0 1 0 1 1 1
%e 1 0 1 1 0 0 1 0 1 1 1 0 0 1 0 1 1 0 0 0 0
%Y Column 2 of A250973.
%K nonn
%O 1,1
%A _R. H. Hardin_, Nov 29 2014
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