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%I
%S 2,10,86,838,6870,62398,613950,6018166,59293518,601267870,6215708078,
%T 64727555230,679456522670,7200537529326,76879249259246,
%U 825573117666246,8913831877350462,96733061472889806,1054372579551732366
%N Number of 4Xn 0..1 arrays with row sums equal and column sums unequal to adjacent columns
%C Row 4 of A202742
%e Some solutions for n=5
%e ..1..1..0..0..1....0..1..0..0..1....1..1..0..1..0....1..0..0..1..0
%e ..0..1..0..1..1....0..1..0..0..1....1..1..0..0..1....1..1..0..0..0
%e ..0..1..1..1..0....0..1..0..0..1....1..1..0..1..0....1..0..0..0..1
%e ..1..1..0..1..0....0..0..0..1..1....1..0..0..1..1....1..0..0..1..0
%K nonn
%O 1,1
%A _R. H. Hardin_ Dec 23 2011
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