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Number of nX4 0..2 arrays with row sums equal and column sums equal
1

%I #5 Mar 31 2012 12:36:57

%S 3,33,177,5673,32613,513903,7343451,185804265,1849858773,30348858003,

%T 499616140191,10882786433775,141444270208647,2412815237573445,

%U 41425627536496497,824284992576210537,12447291755448613317

%N Number of nX4 0..2 arrays with row sums equal and column sums equal

%C Column 4 of A203564

%H R. H. Hardin, <a href="/A203560/b203560.txt">Table of n, a(n) for n = 1..39</a>

%e Some solutions for n=5

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 03 2012