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A317381 Number of nX6 0..1 arrays with every element unequal to 0, 1, 2, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero. 1

%I #4 Jul 26 2018 17:00:49

%S 32,45,270,1580,10732,75405,508181,3446847,23624322,161229670,

%T 1098816831,7502653827,51215288080,349470796318,2385134752139,

%U 16279122880898,111101831408560,758256658747120,5175081010159005,35319539304845840

%N Number of nX6 0..1 arrays with every element unequal to 0, 1, 2, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

%C Column 6 of A317383.

%H R. H. Hardin, <a href="/A317381/b317381.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A317383.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jul 26 2018

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Last modified April 24 07:35 EDT 2024. Contains 371922 sequences. (Running on oeis4.)