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A223469 Number of nX3 0..2 arrays with no more than floor(nX3/2) elements equal to at least one king-move neighbor, with new values introduced in row major 0..2 order 1

%I #4 Mar 20 2013 10:31:14

%S 2,18,49,522,883,12859,20377,327082,517062,8613707,13654412,232128995,

%T 368736563,6353014689,10105994483,175801614242,279936196941,

%U 4905331076864,7816872356924,137760977522959,219658300762477

%N Number of nX3 0..2 arrays with no more than floor(nX3/2) elements equal to at least one king-move neighbor, with new values introduced in row major 0..2 order

%C Column 3 of A223473

%H R. H. Hardin, <a href="/A223469/b223469.txt">Table of n, a(n) for n = 1..189</a>

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Mar 20 2013

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Last modified April 25 05:56 EDT 2024. Contains 371964 sequences. (Running on oeis4.)