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A318211 Number of nX5 0..1 arrays with every element unequal to 1, 2, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1

%I

%S 3,21,47,245,1042,4794,20502,93848,413543,1866198,8419364,37903931,

%T 171452530,772835587,3491017470,15756245294,71124997356,321138172302,

%U 1449613531826,6544951016378,29546522979051,133392926489825

%N Number of nX5 0..1 arrays with every element unequal to 1, 2, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

%C Column 5 of A318214.

%H R. H. Hardin, <a href="/A318211/b318211.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A318214.

%K nonn

%O 1,1

%A _R. H. Hardin_, Aug 21 2018

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Last modified May 9 12:56 EDT 2021. Contains 343742 sequences. (Running on oeis4.)