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A237902 Number of (n+1)X(4+1) 0..3 arrays with the maximum plus the upper median minus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one 1

%I #4 Feb 15 2014 13:37:38

%S 88964,3351086,130240640,5180304200,204201919828,8050312460472,

%T 317615484901450,12541938210600686,494997583640826026,

%U 19532906919731530348,770862072836077524892,30425338599275066294072

%N Number of (n+1)X(4+1) 0..3 arrays with the maximum plus the upper median minus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one

%C Column 4 of A237904

%H R. H. Hardin, <a href="/A237902/b237902.txt">Table of n, a(n) for n = 1..55</a>

%e Some solutions for n=1

%e ..1..1..2..1..2....2..2..1..0..1....1..1..2..3..0....3..0..3..2..1

%e ..0..3..3..1..2....3..1..2..2..3....3..3..2..0..3....3..0..2..3..0

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 15 2014

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