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1/128 the number of (n+2)X9 binary arrays with no 3X3 subblock trace equal to any horizontal or vertical neighbor 3X3 subblock trace
1

%I #5 Mar 31 2012 12:36:04

%S 122284,4312662,193660943,8546141676,392747944918,18748403999482,

%T 902732470133370,43465221457460786,2093335363577578796,

%U 100815258015066256683,4855874608710554589630,233881846629007685815503

%N 1/128 the number of (n+2)X9 binary arrays with no 3X3 subblock trace equal to any horizontal or vertical neighbor 3X3 subblock trace

%C Column 7 of A185866

%H R. H. Hardin, <a href="/A185864/b185864.txt">Table of n, a(n) for n = 1..200</a>

%e Some solutions for 4X9

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 05 2011