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%I #5 Jun 20 2022 18:56:26
%S 1344640,2531888,4577624,10632200,23194936,62379416,157274648,
%T 467509400,1311421240,4191830168,12727101464
%N Number of (n+1) X (7+1) 0..7 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 7 (constant-stress 1 X 1 tilings).
%e Some solutions for n=1:
%e 0 6 3 6 0 3 2 6 4 4 7 4 5 0 5 1 4 4 6 3 5 4 6 2
%e 4 3 7 3 4 0 6 3 0 7 3 7 1 3 1 4 0 7 2 6 1 7 2 5
%Y Column 7 of A234728.
%K nonn
%O 1,1
%A _R. H. Hardin_, Dec 30 2013