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A316930 Number of nX6 0..1 arrays with every element unequal to 0, 2, 3, 4, 5, 6 or 7 king-move adjacent elements, with upper left element zero. 1

%I #4 Jul 16 2018 13:00:51

%S 1,272,5114,242908,10973407,504420842,23331389753,1082511783630,

%T 50268964898040,2335445337904301,108522596510808705,

%U 5043152673374074529,234367636152187821684,10891778297372461533674,506176787613385987355419

%N Number of nX6 0..1 arrays with every element unequal to 0, 2, 3, 4, 5, 6 or 7 king-move adjacent elements, with upper left element zero.

%C Column 6 of A316932.

%H R. H. Hardin, <a href="/A316930/b316930.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A316932.

%K nonn

%O 1,2

%A _R. H. Hardin_, Jul 16 2018

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Last modified April 23 07:57 EDT 2024. Contains 371905 sequences. (Running on oeis4.)