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Number of (n+1)X(3+1) 0..2 arrays with 2X2 subblock sums lexicographically nondecreasing rowwise and nonincreasing columnwise
1

%I #4 Jan 10 2014 09:52:59

%S 2500,65497,1762344,37115629,785712765,13504013024,235332193767,

%T 3433774399772,50886532849316,647263611376214,8360593933795473,

%U 94543450237472909,1085137138664791739,11076999555060193403

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

%C Column 3 of A235441

%H R. H. Hardin, <a href="/A235439/b235439.txt">Table of n, a(n) for n = 1..147</a>

%e Some solutions for n=2

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 10 2014