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A193612 Number of n X n symmetric 0..5 arrays with no element equal to the sum mod 6 of all its horizontal and vertical neighbors 0

%I

%S 5,123,15625,9766908,30517597530,476837158203125,37252902984619140625

%N Number of n X n symmetric 0..5 arrays with no element equal to the sum mod 6 of all its horizontal and vertical neighbors

%e Some solutions for 4X4

%e ..3..0..3..5....3..0..4..1....3..3..3..3....3..0..1..3....3..0..3..3

%e ..0..3..1..5....0..0..2..0....3..0..2..4....0..3..5..3....0..3..4..4

%e ..3..1..3..2....4..2..2..4....3..2..3..3....1..5..1..0....3..4..2..2

%e ..5..5..2..3....1..0..4..0....3..4..3..1....3..3..0..5....3..4..2..1

%K nonn

%O 1,1

%A _R. H. Hardin_ Jul 31 2011

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Last modified January 25 16:01 EST 2022. Contains 350572 sequences. (Running on oeis4.)