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A251247 Number of (n+1)X(6+1) 0..2 arrays with no 2X2 subblock having the sum of its diagonal elements less than the minimum of its antidiagonal elements.

%I A251247 #6 Jul 23 2025 13:12:29
%S A251247 2911869,3975606801,5423196612609,7397658897202791,
%T A251247 10090935221593972941,13764744150100667222985,
%U A251247 18776074467676820865893649,25611879095826060637986004629,34936394682728788460192115698193
%N A251247 Number of (n+1)X(6+1) 0..2 arrays with no 2X2 subblock having the sum of its diagonal elements less than the minimum of its antidiagonal elements.
%C A251247 Column 6 of A251249
%H A251247 R. H. Hardin, <a href="/A251247/b251247.txt">Table of n, a(n) for n = 1..210</a>
%e A251247 Some solutions for n=1
%e A251247 ..1..0..0..0..0..2..1....2..0..0..0..1..0..0....1..0..0..0..2..0..1
%e A251247 ..2..1..1..0..1..2..1....1..0..2..2..1..1..0....2..2..2..0..0..0..0
%K A251247 nonn
%O A251247 1,1
%A A251247 _R. H. Hardin_, Dec 01 2014