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

%I #4 Feb 11 2014 17:46:04

%S 4700,39236,333508,3004030,26578184,236841050,2109752772,18967505282,

%T 169027123272,1509396722124,13489906100708,120997556161304,

%U 1080200848895788,9651096798463826,86312065065972436,773073801408693908

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

%C Column 4 of A237703

%H R. H. Hardin, <a href="/A237699/b237699.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=2

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 11 2014