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Number of (n+2)X6 binary arrays avoiding patterns 010 and 101 in rows, columns and nw-to-se diagonals
1

%I #5 Mar 31 2012 12:36:56

%S 2062,14068,84322,505798,3056040,18480372,111589592,674322800,

%T 4074139940,24612093494,148701447448,898399743424,5427755036698,

%U 32792496406138,198119766704856,1196964769857880,7231611525811128,43690672868090104

%N Number of (n+2)X6 binary arrays avoiding patterns 010 and 101 in rows, columns and nw-to-se diagonals

%C Column 4 of A203355

%H R. H. Hardin, <a href="/A203351/b203351.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=3

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Dec 31 2011