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A268179 Number of nX4 0..4 arrays with every repeated value in every row equal to, and in every column unequal to, the previous repeated value, and new values introduced in row-major sequential order. 1

%I #4 Jan 28 2016 07:34:46

%S 14,3552,1589578,829256141,423155007379,214576839826736,

%T 107394776331325897,53302504644837846400,26248089243240734040857,

%U 12845211922803675025776670,6252745531707973995264823525

%N Number of nX4 0..4 arrays with every repeated value in every row equal to, and in every column unequal to, the previous repeated value, and new values introduced in row-major sequential order.

%C Column 4 of A268180.

%H R. H. Hardin, <a href="/A268179/b268179.txt">Table of n, a(n) for n = 1..16</a>

%e Some solutions for n=2

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

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

%Y Cf. A268180.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 28 2016

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Last modified March 29 06:13 EDT 2024. Contains 371265 sequences. (Running on oeis4.)