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 A267915 Number of 4Xn 0..2 arrays with every repeated value in every row unequal to the previous repeated value, and in every column equal to the previous repeated value, and new values introduced in row-major sequential order. 1

%I

%S 13,938,43972,2331981,104491831,4817531571,207508204575,8960112001163,

%T 375426257575299,15673406360156331,644971612069289479,

%U 26434347183210422659,1075438596218448452443,43616300555346348016639

%N Number of 4Xn 0..2 arrays with every repeated value in every row unequal to the previous repeated value, and in every column equal to the previous repeated value, and new values introduced in row-major sequential order.

%C Row 4 of A267911.

%H R. H. Hardin, <a href="/A267915/b267915.txt">Table of n, a(n) for n = 1..151</a>

%e Some solutions for n=3

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

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

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

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

%Y Cf. A267911.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 22 2016

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Last modified August 12 05:33 EDT 2020. Contains 336438 sequences. (Running on oeis4.)