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%I
%S 39720,169128,710304,4151672,22970144,150606424,911837036,6251426440,
%T 39266933948,276635826688,1778814863004,12796967663216,83932949350360,
%U 614139960280996,4103610483499364,30438970840376560,207060580976230816
%N Number of (n+1) X (7+1) 0..4 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 2, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).
%H R. H. Hardin, <a href="/A234920/b234920.txt">Table of n, a(n) for n = 1..100</a>
%e Some solutions for n=2:
%e 1 0 3 0 3 0 3 4 1 0 3 2 1 3 4 3 2 3 1 3 0 3 1 3
%e 2 3 4 3 4 3 4 3 4 1 2 3 0 4 3 0 1 4 0 4 3 4 0 4
%e 1 4 3 0 3 0 3 0 1 0 3 2 1 3 4 3 2 3 1 3 4 3 1 3
%Y Column 7 of A234921.
%K nonn
%O 1,1
%A _R. H. Hardin_, Jan 01 2014
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