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A298900 Number of nX6 0..1 arrays with every element equal to 3, 4, 5, 6 or 8 king-move adjacent elements, with upper left element zero. 1

%I #4 Jan 28 2018 09:20:01

%S 0,5,7,24,120,963,4689,34739,206363,1388386,8770132,58277644,

%T 374054863,2461101248,15971848701,104543429551,680910307295,

%U 4450730822243,29026246222317,189592201754404,1237265914602821,8078981295508349

%N Number of nX6 0..1 arrays with every element equal to 3, 4, 5, 6 or 8 king-move adjacent elements, with upper left element zero.

%C Column 6 of A298902.

%H R. H. Hardin, <a href="/A298900/b298900.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A298902.

%K nonn

%O 1,2

%A _R. H. Hardin_, Jan 28 2018

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Last modified April 24 17:20 EDT 2024. Contains 371962 sequences. (Running on oeis4.)