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%I #4 Feb 17 2014 11:44:53
%S 17963540,1301417096,69678083388,4182799295184,300828077426994,
%T 21843683698746812,1736639229342029538,120723056177502522944,
%U 9134690286446667742572,685193215378517012130192
%N Number of (n+1)X(7+1) 0..3 arrays with the maximum minus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one
%C Column 7 of A238072
%H R. H. Hardin, <a href="/A238071/b238071.txt">Table of n, a(n) for n = 1..20</a>
%e Some solutions for n=1
%e ..0..0..0..1..2..3..1..2....0..0..0..2..1..2..3..1....0..0..1..2..1..0..1..3
%e ..2..0..1..2..1..2..0..1....2..0..1..2..1..0..2..2....0..0..0..2..2..2..3..2
%K nonn
%O 1,1
%A _R. H. Hardin_, Feb 17 2014