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%I #4 Dec 16 2014 15:30:03
%S 1763,1516,2151,3032,5230,8130,11639,20350,31954,45815,80430,126682,
%T 181895,319918,504586,724967,1276206,2014186,2894759,5098030,8048554,
%U 11568935,20378670,32177962,46255655,81487918,128679466,184982567
%N Number of (4+2)X(n+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 0 1 3 6 or 7 and every 3X3 column and antidiagonal sum not equal to 0 1 3 6 or 7
%C Row 4 of A252305
%H R. H. Hardin, <a href="/A252309/b252309.txt">Table of n, a(n) for n = 1..210</a>
%F Empirical: a(n) = 7*a(n-3) -14*a(n-6) +8*a(n-9) for n>15
%e Some solutions for n=4
%e ..3..0..0..0..3..0....2..0..1..2..3..1....0..1..2..0..1..2....2..1..0..2..1..0
%e ..0..2..1..0..2..1....1..1..1..1..1..1....3..0..3..0..0..3....0..1..2..0..1..2
%e ..2..3..1..2..0..1....2..1..0..2..1..0....2..1..3..2..1..3....3..0..3..3..0..3
%e ..0..3..0..3..0..0....2..3..1..2..3..1....0..1..2..0..1..2....2..1..0..2..1..0
%e ..0..2..1..3..2..1....1..1..1..1..1..1....0..0..3..0..0..0....0..1..2..0..1..2
%e ..2..0..1..2..0..1....2..1..0..2..1..3....2..1..3..2..1..0....3..0..3..3..0..0
%K nonn
%O 1,1
%A _R. H. Hardin_, Dec 16 2014
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