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Number of nX6 0..2 arrays with every element neighboring horizontally or vertically both a 0 and a 1
1

%I #5 Mar 31 2012 12:36:57

%S 0,196,10404,614656,46485124,3743237124,257720706244,20056281523776,

%T 1492411644481536,112070612773938064,8426586286656023616,

%U 632681292075367516804,47524857928919914127524,3570176077491731508417600

%N Number of nX6 0..2 arrays with every element neighboring horizontally or vertically both a 0 and a 1

%C Column 6 of A203542

%H R. H. Hardin, <a href="/A203540/b203540.txt">Table of n, a(n) for n = 1..73</a>

%e Some solutions for n=5

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

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

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

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

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

%K nonn

%O 1,2

%A _R. H. Hardin_ Jan 02 2012