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Number of nX6 0..1 arrays with every element unequal to 2, 3, 4 or 5 king-move adjacent elements, with upper left element zero.
1

%I #4 May 05 2018 15:29:02

%S 0,209,1891,48148,1105513,25507453,598203550,13909028356,324563218021,

%T 7567409946962,176452028507188,4114706214487918,95946894631956152,

%U 2237334544522483079,52170999659329203243,1216543293562638286790

%N Number of nX6 0..1 arrays with every element unequal to 2, 3, 4 or 5 king-move adjacent elements, with upper left element zero.

%C Column 6 of A304065.

%H R. H. Hardin, <a href="/A304063/b304063.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A304065.

%K nonn

%O 1,2

%A _R. H. Hardin_, May 05 2018