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%I #5 Mar 31 2012 12:36:58
%S 944784,252047376,67240638864,17968205387664,4802315365587600,
%T 1283572086126147216,343078794839144051856,91699807460715032147856,
%U 24509991269729763610855056,6551155815170345215277792400
%N Number of (n+1)X6 0..3 arrays with no 2X2 subblock having equal diagonal elements or equal antidiagonal elements
%C Column 5 of A203826
%H R. H. Hardin, <a href="/A203823/b203823.txt">Table of n, a(n) for n = 1..210</a>
%F Empirical: a(n) = 303*a(n-1) -8127*a(n-2) -394891*a(n-3) +4091304*a(n-4) +21176820*a(n-5) -92236816*a(n-6)
%e Some solutions for n=4
%e ..3..1..1..3..2..1....2..0..1..0..3..3....2..1..0..2..1..0....2..2..0..3..2..3
%e ..2..0..0..3..0..0....1..3..2..2..1..1....3..3..3..2..3..2....0..1..0..3..2..3
%e ..1..1..1..1..1..1....2..3..1..3..3..2....0..2..0..2..3..0....3..1..0..1..2..3
%e ..2..0..2..2..2..3....0..3..0..0..1..0....1..1..1..1..3..2....0..1..2..1..2..3
%e ..1..1..3..3..0..3....2..2..2..2..3..2....3..2..2..0..3..2....0..1..2..3..2..3
%K nonn
%O 1,1
%A _R. H. Hardin_ Jan 06 2012
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