%I #4 Jan 10 2018 07:36:32
%S 5,573,1274,4648,18189,74675,290466,1134198,4475863,17501388,68447326,
%T 268885391,1056650444,4151346258,16317217303,64161745436,252378618258,
%U 993086741498,3908970841059,15390703083981,60613211125295
%N Number of nX6 0..1 arrays with every element equal to 1, 2, 3 or 6 king-move adjacent elements, with upper left element zero.
%C Column 6 of A297993.
%H R. H. Hardin, <a href="/A297991/b297991.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=6
%e ..0..1..0..1..1..0. .0..1..1..0..0..0. .0..0..0..1..0..0. .0..0..1..0..1..1
%e ..1..0..1..0..1..0. .0..1..0..1..0..1. .1..1..1..0..1..0. .1..0..1..0..1..0
%e ..1..0..1..0..1..0. .0..1..0..1..1..1. .0..0..1..0..1..1. .1..0..1..0..0..0
%e ..0..0..1..0..1..0. .1..1..0..1..0..1. .1..0..1..0..0..1. .1..0..1..0..1..0
%e ..1..0..1..0..1..1. .0..0..0..1..0..1. .1..0..1..1..1..0. .0..0..1..0..1..0
%e ..1..1..0..1..0..0. .1..1..1..1..0..1. .1..0..0..0..0..0. .1..1..0..1..1..0
%Y Cf. A297993.
%K nonn
%O 1,1
%A _R. H. Hardin_, Jan 10 2018