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A193484 Number of n X n symmetric 0..5 arrays with each element equal to the product mod 6 of two of its horizontal and vertical neighbors 0

%I

%S 0,4,24,989,93061,31790896,29561132743,83415272837037,

%T 713619852188928603

%N Number of n X n symmetric 0..5 arrays with each element equal to the product mod 6 of two of its horizontal and vertical neighbors

%e Some solutions for 4X4

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

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

%e ..2..1..1..1....1..1..1..4....4..2..2..4....1..1..3..3....2..4..4..4

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

%K nonn

%O 1,2

%A _R. H. Hardin_ Jul 27 2011

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Last modified July 4 17:52 EDT 2022. Contains 355083 sequences. (Running on oeis4.)