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A317456 Number of nX6 0..1 arrays with every element unequal to 1, 2, 4, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero. 1

%I #4 Jul 28 2018 20:52:45

%S 5,165,322,1525,21250,165890,1201543,12609827,130759485,1165547325,

%T 11861528132,122671090575,1179210043855,11913085928857,

%U 121079296593807,1195464237944895,12031381095915147,121284411043719032

%N Number of nX6 0..1 arrays with every element unequal to 1, 2, 4, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

%C Column 6 of A317458.

%H R. H. Hardin, <a href="/A317456/b317456.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A317458.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jul 28 2018

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Last modified April 19 03:46 EDT 2024. Contains 371782 sequences. (Running on oeis4.)