A305775 - OEIS

%I #4 Jun 10 2018 09:42:43

%S 64,1709,15953,199257,2553685,33891076,453853629,6095547869,

%T 81987206051,1103823817459,14865759771623,200213645647179,

%U 2696683554462562,36322886951923401,489251552122709363,6590002565528940149

%N Number of nX7 0..1 arrays with every element unequal to 0, 1, 2, 3, 5 or 7 king-move adjacent elements, with upper left element zero.

%C Column 7 of A305776.

%H R. H. Hardin, <a href="/A305775/b305775.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A305776.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jun 10 2018