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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.
1

%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