A183427 - OEIS

%I #10 Mar 31 2012 12:35:51

%S 27,129,2097,62694,568053,9465579,153369936,2690956971,45874334853,

%T 796531210974,13594653632997,236054009534571,4119252539173344,

%U 72199869938810379,1270404732873196197,22433067829384669998

%N Half the number of nX4 0..2 arrays with no element equal its row sum plus its column sum mod 3

%C Column 4 of A183429

%H R. H. Hardin, <a href="/A183427/b183427.txt">Table of n, a(n) for n = 1..32</a>

%e Some solutions for 6X4

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

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 04 2011