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Number of nX7 0..1 arrays with every element equal to 1, 2, 4 or 5 king-move adjacent elements, with upper left element zero.
1

%I #4 Jan 09 2018 07:57:14

%S 8,99,245,2359,11623,61204,483929,2884282,18478260,127847471,

%T 829387894,5485155575,36667835017,242733743793,1613325886315,

%U 10720998638200,71201535319957,473312060554166,3144232961120243,20890896841356141

%N Number of nX7 0..1 arrays with every element equal to 1, 2, 4 or 5 king-move adjacent elements, with upper left element zero.

%C Column 7 of A297959.

%H R. H. Hardin, <a href="/A297958/b297958.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=6

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

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

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

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

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

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

%Y Cf. A297959.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 09 2018