A304900 - OEIS

%I #4 May 20 2018 10:40:44

%S 8,4184,23101,546357,8143342,132134627,2256313057,36576467823,

%T 611064999079,10097928834018,167029611867699,2768435464938330,

%U 45799563014980397,758446971924340233,12555761237734510101

%N Number of nX7 0..1 arrays with every element unequal to 1, 2, 3, 4 or 7 king-move adjacent elements, with upper left element zero.

%C Column 7 of A304901.

%H R. H. Hardin, <a href="/A304900/b304900.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A304901.

%K nonn

%O 1,1

%A _R. H. Hardin_, May 20 2018