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Number of (n+2)X9 binary arrays avoiding patterns 000 and 111 in rows and columns
1

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

%S 176238,5327258,119835492,3024430930,72950746702,1791372199364,

%T 43680343039806,1068074622125486,26087996711485980,637482788594287422,

%U 15574804643638753398,380545025412528955724,9297752486304073629542

%N Number of (n+2)X9 binary arrays avoiding patterns 000 and 111 in rows and columns

%C Column 7 of A203407

%H R. H. Hardin, <a href="/A203406/b203406.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=3

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 01 2012