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A305952 Number of nX6 0..1 arrays with every element unequal to 0, 2, 3, 4, 5 or 7 king-move adjacent elements, with upper left element zero. 1

%I #4 Jun 15 2018 06:07:56

%S 1,272,2800,76951,1969026,52618569,1406191296,37746118432,

%T 1013991166787,27256970473749,732839142493897,19705593065291569,

%U 529895557393242397,14249531178588711106,383190868822260763957,10304612759199778770913

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

%C Column 6 of A305954.

%H R. H. Hardin, <a href="/A305952/b305952.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A305954.

%K nonn

%O 1,2

%A _R. H. Hardin_, Jun 15 2018

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Last modified April 19 19:02 EDT 2024. Contains 371798 sequences. (Running on oeis4.)