A303689 - OEIS

%I #4 Apr 28 2018 09:33:56

%S 0,702,191,5563,4619,55382,99205,713542,1964803,10454428,36456925,

%T 170495722,667372121,2966797695,12357633485,53847703784,232236213151,

%U 1006212092360,4425027446469,19184005184192,85271913119853

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

%C Column 7 of A303690.

%H R. H. Hardin, <a href="/A303689/b303689.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A303690.

%K nonn

%O 1,2

%A _R. H. Hardin_, Apr 28 2018