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Number of (n+1)X(3+1) 0..3 arrays with the sum of each 2X2 subblock maximum and minimum lexicographically nondecreasing columnwise and nonincreasing rowwise
1

%I #4 Jan 15 2014 08:25:40

%S 33640,3493283,351909466,30537258362,2563845268583,197624940459675,

%T 14776689666349119,1049315480753471778,72598830851735754112,

%U 4858264843484096655111,318359623119686331752911

%N Number of (n+1)X(3+1) 0..3 arrays with the sum of each 2X2 subblock maximum and minimum lexicographically nondecreasing columnwise and nonincreasing rowwise

%C Column 3 of A235747

%H R. H. Hardin, <a href="/A235745/b235745.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=1

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 15 2014