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A222518 Number of nX4 0..3 arrays with exactly floor(nX4/2) elements unequal to at least one king-move neighbor, with new values introduced in row major 0..3 order 1

%I #4 Feb 23 2013 17:22:05

%S 3,9,37,206,1111,26513,221659,6043652,56070649,1573702327,14644968953,

%T 408818223648,3869679949709,106284839137519,1021535069202511,

%U 27650305434512778,269672290550777351,7194730625200174103

%N Number of nX4 0..3 arrays with exactly floor(nX4/2) elements unequal to at least one king-move neighbor, with new values introduced in row major 0..3 order

%C Column 4 of A222522

%H R. H. Hardin, <a href="/A222518/b222518.txt">Table of n, a(n) for n = 1..92</a>

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 23 2013

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Last modified April 20 03:59 EDT 2024. Contains 371798 sequences. (Running on oeis4.)