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%I #5 Dec 10 2014 09:14:03
%S 1038,5632,7080,13152,107040,309144,893120,19032128,165273152,
%T 765683904,31543581824,1017632821376,5776714371584,549951279116416,
%U 49897575625330816,312701410177607424,75341988071758426368
%N Number of (n+2)X(n+2) 0..3 arrays with every 3X3 subblock row and column sum not 2 4 5 or 7 and every diagonal and antidiagonal sum 2 4 5 or 7
%C Diagonal of A251876
%H R. H. Hardin, <a href="/A251868/b251868.txt">Table of n, a(n) for n = 1..18</a>
%e Some solutions for n=4
%e ..3..1..2..0..1..2....3..3..3..3..3..0....2..1..3..2..1..0....2..3..1..2..0..1
%e ..3..0..3..3..3..0....3..2..1..0..2..1....1..2..0..1..2..3....1..1..1..1..1..1
%e ..3..2..1..0..2..1....0..1..2..3..1..2....0..3..3..3..0..0....3..2..1..3..2..1
%e ..0..1..2..3..1..2....3..3..0..3..0..3....2..1..0..2..1..3....2..3..1..2..0..1
%e ..3..3..0..3..0..3....0..2..1..3..2..1....1..2..3..1..2..3....1..1..1..1..1..1
%e ..0..2..1..3..2..1....0..1..2..0..1..2....0..0..3..0..3..0....3..2..1..3..2..1
%K nonn
%O 1,1
%A _R. H. Hardin_, Dec 10 2014
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