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%I #5 Dec 18 2015 18:17:43
%S 7,343,117649,282480208,4747561627592,558545864083284007
%N Number of n X n symmetric 0..7 arrays with no element equal to the sum mod 8 of all its horizontal and vertical neighbors
%e Some solutions for 4X4
%e ..4..0..0..7....4..0..0..1....4..0..0..6....4..0..4..4....4..0..0..7
%e ..0..0..6..5....0..0..1..3....0..0..3..7....0..4..4..3....0..0..3..5
%e ..0..6..0..4....0..1..4..3....0..3..7..7....4..4..7..6....0..3..7..2
%e ..7..5..4..5....1..3..3..5....6..7..7..7....4..3..6..7....7..5..2..0
%K nonn
%O 1,1
%A _R. H. Hardin_ Jul 31 2011
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