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A304470 Number of nX6 0..1 arrays with every element unequal to 0, 1, 2, 3 or 6 king-move adjacent elements, with upper left element zero. 1

%I #4 May 13 2018 10:40:25

%S 32,293,810,2957,18879,89071,380640,2075796,10775870,50236164,

%T 252869601,1311260758,6430735023,31832985392,162138295874,

%U 811240544560,4028528684490,20287686091795,101987678409279,509203732604582

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

%C Column 6 of A304472.

%H R. H. Hardin, <a href="/A304470/b304470.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A304472.

%K nonn

%O 1,1

%A _R. H. Hardin_, May 13 2018

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Last modified April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)