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Number of nX(n+3) binary matrices with rows and columns each in strictly increasing order as binary numbers and every 0 adjacent to a 1 and every 1 adjacent to a 0
0

%I #2 Mar 31 2012 12:35:49

%S 0,0,0,0,0,1,144,10251,1452733,403935677,256514525924,404979395412269

%N Number of nX(n+3) binary matrices with rows and columns each in strictly increasing order as binary numbers and every 0 adjacent to a 1 and every 1 adjacent to a 0

%C Superdiagonal 3 of A181011

%e All solutions for 6X9

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

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

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

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

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

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

%K nonn

%O 1,7

%A _R. H. Hardin_ Sep 30 2010