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Number of (n+1)X(6+1) 0..2 arrays with the upper median plus the lower median minus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one
1

%I #4 Feb 14 2014 07:56:11

%S 107272,2385956,55582616,1360467556,31199205700,726581268166,

%T 17294230106544,415902349829102,9695376441265920,227751536306356010,

%U 5413153557708303316,128972134031199811494,3027744338091291704100

%N Number of (n+1)X(6+1) 0..2 arrays with the upper median plus the lower median minus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one

%C Column 6 of A237868

%H R. H. Hardin, <a href="/A237866/b237866.txt">Table of n, a(n) for n = 1..50</a>

%e Some solutions for n=1

%e ..1..1..2..1..2..2..0....1..1..2..1..1..2..2....2..0..0..0..1..1..0

%e ..2..1..0..0..1..2..0....2..1..0..0..2..2..0....1..0..2..1..2..1..2

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 14 2014