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A187136 Number of (n+1)X6 0..2 arrays with every 2X2 subblock trace equal to exactly one or two horizontal and vertical neighbor 2X2 subblock traces 1

%I #5 Mar 31 2012 12:36:07

%S 12609,1853892,99203418,7020258336,440941355208,29716252404984,

%T 1928394629936928,127632346709629266,8355847987373669514,

%U 550355304750006790962,36131509292425042328892,2376245166849996273772092

%N Number of (n+1)X6 0..2 arrays with every 2X2 subblock trace equal to exactly one or two horizontal and vertical neighbor 2X2 subblock traces

%C Column 5 of A187140

%H R. H. Hardin, <a href="/A187136/b187136.txt">Table of n, a(n) for n = 1..28</a>

%e Some solutions for 4X6

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Mar 05 2011

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Last modified April 16 18:02 EDT 2024. Contains 371750 sequences. (Running on oeis4.)