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Number of 6Xn 0..1 arrays with row sums equal and column sums unequal to adjacent columns
0

%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