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A304425 Number of nX6 0..1 arrays with every element unequal to 1, 2, 3, 4 or 5 king-move adjacent elements, with upper left element zero. 1

%I #4 May 12 2018 09:37:46

%S 5,1493,33263,1043316,30362267,898146670,26510744474,783174010085,

%T 23137703330738,683623975475552,20199051830780465,596830534656558763,

%U 17634986814152323681,521075710061846580996,15396691883833645691809

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

%C Column 6 of A304427.

%H R. H. Hardin, <a href="/A304425/b304425.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A304427.

%K nonn

%O 1,1

%A _R. H. Hardin_, May 12 2018

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Last modified September 16 00:43 EDT 2024. Contains 375959 sequences. (Running on oeis4.)