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%I #4 Nov 29 2014 15:28:55
%S 530,10743,218298,4434257,90065275,1829373498,37157718881,
%T 754736624943,15329985552866,311378109150967,6324619621199857,
%U 128463794143755317,2609318408138865875,52999700037507178758,1076514156083681528652
%N Number of (n+1)X(2+1) 0..2 arrays with no 2X2 subblock having its maximum diagonal element less than the absolute difference of its antidiagonal elements
%C Column 2 of A251010
%H R. H. Hardin, <a href="/A251004/b251004.txt">Table of n, a(n) for n = 1..210</a>
%F Empirical: a(n) = 27*a(n-1) -169*a(n-2) +800*a(n-3) -2847*a(n-4) +5874*a(n-5) -6458*a(n-6) +2876*a(n-7) +558*a(n-8) -1473*a(n-9) +1896*a(n-10) -1394*a(n-11) +460*a(n-12) -68*a(n-13)
%e Some solutions for n=2
%e ..2..1..0....0..1..1....2..1..2....0..2..2....2..2..0....1..0..1....1..2..2
%e ..2..0..1....1..0..0....2..2..1....2..2..1....0..1..1....2..2..2....1..0..0
%e ..1..0..2....1..0..1....1..0..0....0..1..2....1..1..2....1..1..2....0..0..0
%K nonn
%O 1,1
%A _R. H. Hardin_, Nov 29 2014
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