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%I #4 Dec 14 2014 16:50:50
%S 8309,8769,17803,29825,57271,112547,223442,447713,891380,1776728,
%T 3561844,7105520,14181200,28426208,56753264,113330576,227147536,
%U 453675152,906181712,1816146128,3628012880,7247618768,14525051344,29018570960
%N Number of (n+2)X(6+2) 0..3 arrays with every 3X3 subblock row and column sum not equal to 0 1 3 6 or 7 and every 3X3 diagonal and antidiagonal sum equal to 0 1 3 6 or 7
%C Column 6 of A252157
%H R. H. Hardin, <a href="/A252155/b252155.txt">Table of n, a(n) for n = 1..210</a>
%F Empirical: a(n) = a(n-1) +14*a(n-3) -14*a(n-4) -56*a(n-6) +56*a(n-7) +64*a(n-9) -64*a(n-10) for n>15
%e Some solutions for n=4
%e ..3..3..2..0..2..0..2..3....3..3..3..3..3..3..3..2....3..3..2..0..2..0..3..1
%e ..3..2..0..2..0..2..0..3....3..0..2..0..2..0..2..0....3..2..0..2..0..2..0..3
%e ..2..0..2..0..2..0..2..3....3..2..0..2..0..2..0..2....3..0..2..0..2..0..2..0
%e ..0..2..0..2..0..2..0..3....2..0..2..0..2..0..2..0....3..2..0..2..0..2..0..2
%e ..2..0..2..0..2..0..2..3....0..2..0..2..0..2..0..3....2..0..2..0..2..0..2..3
%e ..0..2..0..2..0..2..0..2....3..3..3..3..2..0..3..1....0..2..0..2..0..2..3..3
%K nonn
%O 1,1
%A _R. H. Hardin_, Dec 14 2014
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