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%I #4 Dec 16 2014 13:06:38
%S 564,1920,8208,68320,1227461,41069194,2178722578,178658210404,
%T 22705656001038,4445145404367921
%N Number of (n+2)X(n+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 1 or 4
%C Diagonal of A252293
%e Some solutions for n=4
%e ..2..1..2..2..2..2....2..2..2..1..2..2....2..2..2..2..1..0....1..0..1..1..1..0
%e ..2..2..2..1..2..2....2..1..2..2..2..2....2..1..2..2..2..1....1..1..1..1..1..1
%e ..1..2..2..2..2..2....2..2..2..2..2..2....2..2..2..1..2..2....1..1..0..1..1..1
%e ..2..2..2..2..2..2....2..2..2..2..2..2....2..2..2..2..2..2....1..1..1..1..1..0
%e ..2..2..2..2..2..2....2..2..2..2..1..2....1..2..2..2..2..2....1..1..1..1..1..1
%e ..1..2..2..2..1..2....1..2..2..2..2..2....2..2..1..2..2..2....1..0..1..1..0..1
%K nonn
%O 1,1
%A _R. H. Hardin_, Dec 16 2014
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