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%I #7 Jun 20 2022 18:42:58
%S 29568,217968,1604020,11826092,87273500,644848264,4769561472,
%T 35319420856,261811840168,1942988877232,14433959951680,
%U 107349012026192,799169229326556,5956201429623128,44434739229424040,331862990142839740
%N Number of (n+1) X (3+1) 0..7 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 4 (constant-stress 1 X 1 tilings).
%H R. H. Hardin, <a href="/A234669/b234669.txt">Table of n, a(n) for n = 1..154</a>
%e Some solutions for n=1:
%e 2 6 2 4 6 4 2 4 5 1 0 0 1 4 5 4 4 4 3 2
%e 3 3 3 1 6 0 2 0 2 2 5 1 6 5 2 5 7 3 6 1
%Y Column 3 of A234672.
%K nonn
%O 1,1
%A _R. H. Hardin_, Dec 29 2013
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