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Number of nX7 0..1 arrays with every element unequal to 0, 1, 2, 3, 5, 7 or 8 king-move adjacent elements, with upper left element zero.
1

%I #4 Jul 21 2018 17:33:24

%S 64,1709,17966,258241,3982123,64566869,1062867065,17593640188,

%T 292154717629,4857706850275,80811430420141,1344642018311307,

%U 22376108531437995,372374332797700997,6197024056292073136

%N Number of nX7 0..1 arrays with every element unequal to 0, 1, 2, 3, 5, 7 or 8 king-move adjacent elements, with upper left element zero.

%C Column 7 of A317125.

%H R. H. Hardin, <a href="/A317124/b317124.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. .0..0..0..0..0..0..1. .0..0..1..0..0..0..0

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

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

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

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

%Y Cf. A317125.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jul 21 2018