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Half the number of nX6 binary arrays with the number of 1-1 adjacencies equal to the number of 0-0 adjacencies
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%I #5 Mar 31 2012 12:35:50

%S 6,210,7954,417190,23226996,1333831052,78105333988,4635786110412,

%T 277890240523800,16785123061670988,1019971463327377356,

%U 62283161216818806836,3818626448625617011996,234919716668014392969048

%N Half the number of nX6 binary arrays with the number of 1-1 adjacencies equal to the number of 0-0 adjacencies

%C Column 6 of A183253

%H R. H. Hardin, <a href="/A183252/b183252.txt">Table of n, a(n) for n = 1..100</a>

%e Some solutions with a(1,1)=0 for 3X6

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 03 2011