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Number of n X n 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 1 and 1 0 0 vertically
1

%I #7 Dec 18 2015 18:18:01

%S 2,16,114,2205,97580,10150118,2433018665,1332236625328,

%T 1658417176295910,4680320299339768945,29900757895299392674248,

%U 432064042048194196301219286,14114419978195735103237247653751,1042092211595049585701702108677740928

%N Number of n X n 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 1 and 1 0 0 vertically

%C Diagonal of A207717

%H R. H. Hardin, <a href="/A207711/b207711.txt">Table of n, a(n) for n = 1..20</a>

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 19 2012