A298773 - OEIS

%I #4 Jan 26 2018 08:44:55

%S 5,49,109,779,2603,11320,61333,284618,1376511,6959439,34511708,

%T 170670413,851900683,4250558598,21161145459,105481131616,526133966100,

%U 2623203957029,13078950820473,65224465637861,325269426017123

%N Number of nX6 0..1 arrays with every element equal to 1, 2, 4, 5 or 8 king-move adjacent elements, with upper left element zero.

%C Column 6 of A298775.

%H R. H. Hardin, <a href="/A298773/b298773.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=7

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

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

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

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

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

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

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

%Y Cf. A298775.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 26 2018