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Number of nX6 0..1 arrays with every element unequal to 0, 1, 2, 3, 6, 7 or 8 king-move adjacent elements, with upper left element zero.
1

%I #4 Jul 24 2018 10:31:10

%S 32,293,1468,7988,101712,929233,7953354,80002584,773208574,7313110319,

%T 70794354214,683841167067,6575649265592,63418384000562,

%U 611788490161263,5897210639871099,56864167445713295,548379767667824359

%N Number of nX6 0..1 arrays with every element unequal to 0, 1, 2, 3, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

%C Column 6 of A317230.

%H R. H. Hardin, <a href="/A317228/b317228.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A317230.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jul 24 2018