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A186800 Number of (n+2)X5 binary arrays with no 3X3 subblock commuting with any horizontal or vertical neighbor 3X3 subblock 1

%I #5 Mar 31 2012 12:36:06

%S 31204,906615,26628581,782510382,22986441710,675297305236,

%T 19839195220290,582841090096150,17122871714488347,503040754965075614,

%U 14778477587659456400,434166411941361179685,12755067189320222783892

%N Number of (n+2)X5 binary arrays with no 3X3 subblock commuting with any horizontal or vertical neighbor 3X3 subblock

%C Column 3 of A186806

%H R. H. Hardin, <a href="/A186800/b186800.txt">Table of n, a(n) for n = 1..200</a>

%e Some solutions for 4X5

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 26 2011

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Last modified April 24 00:30 EDT 2024. Contains 371917 sequences. (Running on oeis4.)