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A185573 Number of (n+1)X3 0..3 arrays with no 2X2 subblock sum equal to any horizontal or vertical neighbor 2X2 subblock sum 1

%I #5 Mar 31 2012 12:36:02

%S 3392,125664,4649320,173985944,6508370600,243047375432,9075956889192,

%T 339043219347960,12665293283911784,473089808175134024,

%U 17671406269801247592,660095110422452092856,24657097179457297605704

%N Number of (n+1)X3 0..3 arrays with no 2X2 subblock sum equal to any horizontal or vertical neighbor 2X2 subblock sum

%C Column 2 of A185575

%H R. H. Hardin, <a href="/A185573/b185573.txt">Table of n, a(n) for n = 1..200</a>

%e Some solutions for 5X3

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 31 2011

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Last modified April 24 00:30 EDT 2024. Contains 371917 sequences. (Running on oeis4.)