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Number of 3Xn 0..n arrays with every repeated value in every row and column unequal to the previous repeated value, and new values introduced in row-major sequential order.
0

%I #3 Jan 24 2016 09:29:43

%S 3,96,7445,1396408,454238345,231327070236,169569975455042,

%T 169395686166997667,221468092160400373173,367444512792822698032517

%N Number of 3Xn 0..n arrays with every repeated value in every row and column unequal to the previous repeated value, and new values introduced in row-major sequential order.

%C Row 3 of A268009.

%e Some solutions for n=3

%e ..0..1..2....0..0..1....0..1..2....0..1..2....0..1..2....0..1..1....0..1..2

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

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

%Y Cf. A268009.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 24 2016