%I #4 Mar 31 2012 12:36:51
%S 2,44,1074,29680,827502,27842760,967878370,35772388788,1349807335782,
%T 52493731492612
%N Number of 6Xn 0..1 arrays with row sums equal and column sums unequal to adjacent columns
%C Row 6 of A202742
%e Some solutions for n=4
%e ..1..0..1..0....1..1..0..0....0..1..1..0....1..1..0..0....0..1..0..1
%e ..1..0..1..0....1..0..0..1....1..1..0..0....0..1..0..1....0..0..1..1
%e ..0..1..1..0....1..0..1..0....1..1..0..0....1..0..1..0....0..1..1..0
%e ..1..0..1..0....1..0..1..0....0..1..0..1....0..1..1..0....1..1..0..0
%e ..1..1..0..0....0..0..1..1....1..0..0..1....0..1..0..1....1..0..0..1
%e ..1..0..1..0....0..1..1..0....0..0..1..1....1..0..1..0....0..1..0..1
%K nonn
%O 1,1
%A _R. H. Hardin_ Dec 23 2011