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Number of nX7 0..1 arrays with every element unequal to 0, 1, 2, 4, 7 or 8 king-move adjacent elements, with upper left element zero.
1

%I #4 Jul 06 2018 12:26:55

%S 64,432,1262,5966,85583,674392,5074646,49303976,433518999,3658627041,

%T 32693639379,288815437019,2513333403187,22125809815244,

%U 194792517954063,1707725977990421,15001694156356047,131860533930921841

%N Number of nX7 0..1 arrays with every element unequal to 0, 1, 2, 4, 7 or 8 king-move adjacent elements, with upper left element zero.

%C Column 7 of A316545.

%H R. H. Hardin, <a href="/A316544/b316544.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A316545.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jul 06 2018