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%I #4 Dec 18 2014 07:19:07
%S 806,432,1783,5628,74181,1215491,6486931,304232630,16970081459,
%T 108911061618,18397477779099,3657274585418076,25856975096624206,
%U 16084237513106982571,11697931298387098661798,86957945614794531238579
%N Number of (n+2)X(n+2) 0..3 arrays with every 3X3 subblock row and column sum not equal to 0 2 4 6 or 7 and every 3X3 diagonal and antidiagonal sum equal to 0 2 4 6 or 7
%C Diagonal of A252523
%e Some solutions for n=4
%e ..2..3..0..2..3..3....3..3..2..3..0..2....3..2..3..3..2..3....3..2..3..3..2..0
%e ..1..2..2..1..2..2....2..2..1..2..2..1....2..1..2..2..1..2....2..1..2..2..1..2
%e ..2..3..3..2..3..3....3..3..2..3..3..2....3..2..0..3..2..0....3..2..0..3..2..3
%e ..2..0..3..2..3..3....0..3..2..3..0..2....3..2..3..3..2..3....0..2..3..3..2..3
%e ..1..2..2..1..2..2....2..2..1..2..2..1....2..1..2..2..1..2....0..1..2..2..1..2
%e ..2..3..3..2..3..0....3..0..2..3..3..2....0..2..3..3..2..0....3..2..3..3..2..0
%K nonn
%O 1,1
%A _R. H. Hardin_, Dec 18 2014
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