A304702 - OEIS

%I #4 May 17 2018 10:02:31

%S 5,165,103,798,5232,47440,296646,2733069,26024851,201787639,

%T 1816538401,16564524559,138289503554,1229262208629,10936054664014,

%U 93981425527645,829519231541114,7309156980531674,63553491773708500,558911166353330443

%N Number of nX6 0..1 arrays with every element unequal to 1, 2, 4, 5 or 6 king-move adjacent elements, with upper left element zero.

%C Column 6 of A304704.

%H R. H. Hardin, <a href="/A304702/b304702.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A304704.

%K nonn

%O 1,1

%A _R. H. Hardin_, May 17 2018