%I #7 Jun 18 2022 23:51:44
%S 184,744,2672,10820,39680,161060,600928,2443916,9247456,37667316,
%T 144145184,587867372,2270003552,9266785652,36041646880,147245616428,
%U 576021402208,2354746576308,9255402599456,37854511615724,149371395546464
%N Number of (n+1) X (1+1) 0..7 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 7, with no adjacent elements equal (constantstress tilted 1 X 1 tilings).
%C Column 1 of A235258.
%H R. H. Hardin, <a href="/A235251/b235251.txt">Table of n, a(n) for n = 1..210</a>
%F Empirical: a(n) = 43*a(n2) 617*a(n4) +3073*a(n6) 1762*a(n8) +264*a(n10).
%e Some solutions for n=4:
%e 0 4 3 1 5 2 6 4 3 4 3 0 4 0 7 2 5 1 6 0
%e 3 0 1 6 2 6 2 7 7 1 2 6 0 3 4 6 2 5 1 2
%e 1 5 3 1 4 1 4 2 5 6 7 4 6 2 6 1 4 0 7 1
%e 6 3 2 7 1 5 1 6 6 0 3 7 0 3 2 4 2 5 5 6
%e 0 4 4 2 7 4 5 3 0 1 6 3 5 1 5 0 4 0 6 0
%K nonn
%O 1,1
%A _R. H. Hardin_, Jan 05 2014
