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%I #4 Dec 17 2014 12:41:29
%S 661,334,3366,48170,1058050,36760486,1956458824,160517960252,
%T 20418505768994,3997026837680912,1204054337705584421,
%U 559547936390811196991
%N Number of (n+2)X(n+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 2 4 6 or 7
%C Diagonal of A252457
%e Some solutions for n=4
%e ..1..1..1..1..1..1....3..3..2..3..3..3....3..3..3..3..3..3....1..1..1..1..1..3
%e ..3..1..1..3..1..1....2..3..3..3..3..3....3..3..3..3..3..2....1..1..1..1..1..1
%e ..1..1..1..1..1..1....3..3..3..3..3..3....3..2..3..3..3..3....1..1..1..1..3..1
%e ..1..1..1..1..1..1....3..3..3..3..3..2....3..3..3..3..3..3....1..1..1..1..1..1
%e ..1..1..1..1..3..1....2..3..3..3..3..3....3..3..3..3..3..3....3..1..1..1..1..1
%e ..1..1..3..1..1..1....3..3..2..3..3..3....3..3..3..2..3..3....1..3..1..1..3..1
%K nonn
%O 1,1
%A _R. H. Hardin_, Dec 17 2014
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