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%I #6 Jun 20 2022 19:33:02
%S 5506,8416,12750,23830,42982,94114,195558,479914,1108726,2964106,
%T 7385190,21074650,55254742,165527434,448561158,1392113914,3852440566,
%U 12264562666,34393441830,111531402970,315410580502,1036750071754,2947674917958
%N Number of (n+1) X (5+1) 0..4 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="/A234561/b234561.txt">Table of n, a(n) for n = 1..210</a>
%F Empirical: a(n) = 4*a(n-1) +30*a(n-2) -132*a(n-3) -331*a(n-4) +1720*a(n-5) +1530*a(n-6) -11280*a(n-7) -1324*a(n-8) +39136*a(n-9) -12360*a(n-10) -67968*a(n-11) +39456*a(n-12) +46080*a(n-13) -34560*a(n-14).
%e Some solutions for n=5:
%e 1 4 1 4 0 4 0 2 0 2 0 2 1 2 1 4 1 4 0 1 0 1 0 0
%e 2 1 2 1 1 1 2 0 2 0 2 0 4 1 4 3 4 3 4 1 4 1 4 0
%e 1 4 1 4 0 4 0 2 0 2 0 2 1 2 1 4 1 4 2 3 2 3 2 2
%e 4 3 4 3 3 3 2 0 2 0 2 0 3 0 3 2 3 2 4 1 4 1 4 0
%e 1 4 1 4 0 4 2 4 2 4 2 4 0 1 0 3 0 3 3 4 3 4 3 3
%e 1 0 1 0 0 0 2 0 2 0 2 0 3 0 3 2 3 2 4 1 4 1 4 0
%Y Column 5 of A234564.
%K nonn
%O 1,1
%A _R. H. Hardin_, Dec 28 2013
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