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A231028 Number of nX5 0..2 arrays x(i,j) with each element horizontally, vertically or antidiagonally next to at least one element with value (x(i,j)+1) mod 3 and at least one element with value (x(i,j)-1) mod 3, and upper left element zero 1

%I #4 Nov 03 2013 06:17:03

%S 0,344,12400,1444702,124446770,11542542126,1050541512334,

%T 96084401660280,8776913226846168,801999453871350642,

%U 73277218848409360596,6695355497136560389160,611752553994156925696252

%N Number of nX5 0..2 arrays x(i,j) with each element horizontally, vertically or antidiagonally next to at least one element with value (x(i,j)+1) mod 3 and at least one element with value (x(i,j)-1) mod 3, and upper left element zero

%C Column 5 of A231031

%H R. H. Hardin, <a href="/A231028/b231028.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=3

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

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

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

%K nonn

%O 1,2

%A _R. H. Hardin_, Nov 03 2013

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Last modified April 18 22:18 EDT 2024. Contains 371782 sequences. (Running on oeis4.)