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A317221 Number of nX7 0..1 arrays with every element unequal to 1, 2, 3, 4, 5, 7 or 8 king-move adjacent elements, with upper left element zero. 1

%I #4 Jul 23 2018 19:49:45

%S 8,5824,272012,18667993,1193567097,77171164500,4981964443017,

%T 321779228843527,20780911115253208,1342134239899231736,

%U 86681283982725408330,5598303502470257891647,361566306104618861816148

%N Number of nX7 0..1 arrays with every element unequal to 1, 2, 3, 4, 5, 7 or 8 king-move adjacent elements, with upper left element zero.

%C Column 7 of A317222.

%H R. H. Hardin, <a href="/A317221/b317221.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A317222.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jul 23 2018

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Last modified September 16 17:01 EDT 2024. Contains 375976 sequences. (Running on oeis4.)