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A183454 Number of nX7 binary arrays with every 1 having exactly three king-move neighbors equal to 1 1

%I #5 Mar 31 2012 12:35:51

%S 1,13,37,73,310,1077,2906,9511,32518,99333,312764,1046598,3343633,

%T 10652049,35996876,117867538,385635340,1352230379,4561605207,

%U 15531139532,57467708700,201840310959,722812200876,2823705961715,10358130143326

%N Number of nX7 binary arrays with every 1 having exactly three king-move neighbors equal to 1

%C Column 7 of A183456

%H R. H. Hardin, <a href="/A183454/b183454.txt">Table of n, a(n) for n = 1..200</a>

%e Some solutions for 5X7

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

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

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

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

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

%K nonn

%O 1,2

%A _R. H. Hardin_ Jan 05 2011

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Last modified June 9 00:51 EDT 2024. Contains 373227 sequences. (Running on oeis4.)