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Number of nX4 0..4 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.
1

%I #4 Jan 24 2016 09:26:09

%S 12,3183,1396408,700411548,342829793123,166704329683286,

%T 80006164995290483,38077402058848620986,17980419636054322547231,

%U 8437778507562515075641180,3938617666912898025748700797

%N Number of nX4 0..4 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 Column 4 of A268009.

%H R. H. Hardin, <a href="/A268008/b268008.txt">Table of n, a(n) for n = 1..17</a>

%e Some solutions for n=2

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

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

%Y Cf. A268009.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 24 2016