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A186608 Number of (n+4)X12 binary arrays with every 5X5 subblock commuting with each horizontal and vertical neighbor 5X5 subblock 1

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

%S 912129,49309,66332,99820,133484,178372,193000,195916,199176,207272,

%T 230808,274692,324324,378860,463624,624268,813168,1009856,1214708,

%U 1505845,1896398,2359091,2879204,3462017,4215879,5229801,6504763,8033833

%N Number of (n+4)X12 binary arrays with every 5X5 subblock commuting with each horizontal and vertical neighbor 5X5 subblock

%C Column 8 of A186609

%H R. H. Hardin, <a href="/A186608/b186608.txt">Table of n, a(n) for n = 1..51</a>

%F Empirical: a(n)=a(n-1)+a(n-3)-a(n-4)+a(n-5)-a(n-6)-a(n-8)+a(n-9)+a(n-10)-a(n-13) for n>22

%e Some solutions for 6X12

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

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 24 2011

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Last modified April 16 16:01 EDT 2024. Contains 371749 sequences. (Running on oeis4.)