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%I #5 Dec 18 2015 18:17:41
%S 0,1,41,2849,731987,1412507142
%N Number of n X n symmetric 0..7 arrays with each element equal to the sum mod 8 of two of its horizontal and vertical neighbors
%e Some solutions for 4X4
%e ..4..6..3..7....0..4..6..2....0..4..7..5....6..3..5..6....0..4..2..1
%e ..6..2..4..4....4..6..2..4....4..4..2..6....3..6..2..1....4..4..6..7
%e ..3..4..1..5....6..2..0..0....7..2..6..4....5..2..4..7....2..6..4..3
%e ..7..4..5..2....2..4..0..0....5..6..4..0....6..1..7..6....1..7..3..6
%K nonn
%O 1,3
%A _R. H. Hardin_ Jul 16 2011
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