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A317265 Number of nX7 0..1 arrays with every element unequal to 0, 1, 3, 4, 6, 7 or 8 king-move adjacent elements, with upper left element zero. 1

%I #4 Jul 25 2018 11:11:00

%S 21,127,186,1220,6645,33695,219131,1493369,9934644,70625395,518178473,

%T 3790437377,27969547182,208246718879,1554178773071,11608328499671,

%U 86848886992241,650617581755995,4875381282591668,36542048437118097

%N Number of nX7 0..1 arrays with every element unequal to 0, 1, 3, 4, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

%C Column 7 of A317266.

%H R. H. Hardin, <a href="/A317265/b317265.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A317266.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jul 25 2018

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Last modified March 29 00:26 EDT 2024. Contains 371264 sequences. (Running on oeis4.)