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 A183449 Number of nX8 binary arrays with every 1 having exactly two king-move neighbors equal to 1 1

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

%S 1,253,1505,7761,176949,1817225,16192521,216103851,2491241396,

%T 26807184942,319246780548,3727927654904,42498891259325,

%U 496063346878031,5787799084661820,67059980281582582,780988033705277709

%N Number of nX8 binary arrays with every 1 having exactly two king-move neighbors equal to 1

%C Column 8 of A183450

%H R. H. Hardin, <a href="/A183449/b183449.txt">Table of n, a(n) for n = 1..198</a>

%e Some solutions for 5X8

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

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

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

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

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

%K nonn

%O 1,2

%A _R. H. Hardin_ Jan 04 2011

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Last modified November 29 10:37 EST 2023. Contains 367429 sequences. (Running on oeis4.)