login
Number of nX5 0..1 arrays with every element unequal to 1, 2, 3, 5 or 6 king-move adjacent elements, with upper left element zero.
1

%I #4 May 17 2018 09:53:26

%S 3,120,669,4910,37050,263381,1894297,13791026,99838011,723141636,

%T 5242242192,38000913259,275443591763,1996621786317,14473789984416,

%U 104921152690890,760577267171391,5513516936878546,39968166811319574

%N Number of nX5 0..1 arrays with every element unequal to 1, 2, 3, 5 or 6 king-move adjacent elements, with upper left element zero.

%C Column 5 of A304697.

%H R. H. Hardin, <a href="/A304694/b304694.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A304697.

%K nonn

%O 1,1

%A _R. H. Hardin_, May 17 2018