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A317071 Number of n X 7 0..1 arrays with every element unequal to 1, 2, 3, 4, 5, 6 or 8 king-move adjacent elements, with upper left element zero. 1

%I #6 May 26 2024 00:02:30

%S 8,5824,463269,49272887,5070445036,522394508690,53838648326109,

%T 5548431500694700,571800375208117048,58927713627125552536,

%U 6072879025469583682081,625849149740372207708915

%N Number of n X 7 0..1 arrays with every element unequal to 1, 2, 3, 4, 5, 6 or 8 king-move adjacent elements, with upper left element zero.

%C Column 7 of A317072.

%H R. H. Hardin, <a href="/A317071/b317071.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A317072.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jul 20 2018

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Last modified August 13 05:05 EDT 2024. Contains 375113 sequences. (Running on oeis4.)