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A304846 Number of nX6 0..1 arrays with every element unequal to 0, 1, 2, 4 or 7 king-move adjacent elements, with upper left element zero. 1

%I

%S 32,184,419,1638,12763,67025,294924,1719748,9770201,48882277,

%T 259675892,1438798433,7606400497,40079694163,216576244679,

%U 1160846367900,6162481677404,32970820534467,176735199566200,942925723444559

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

%C Column 6 of A304848.

%H R. H. Hardin, <a href="/A304846/b304846.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A304848.

%K nonn

%O 1,1

%A _R. H. Hardin_, May 19 2018

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Last modified September 25 10:58 EDT 2021. Contains 347654 sequences. (Running on oeis4.)