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 A283519 Number of nX5 0..1 arrays with no 1 equal to more than three of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly two elements. 1

%I

%S 0,28,2763,113984,4069571,136572268,4331276717,132684847054,

%T 3961612505725,115959380822064,3341257551257359,95044914636370005,

%U 2674780297078876521,74591845346350588784,2063897837020442688904

%N Number of nX5 0..1 arrays with no 1 equal to more than three of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly two elements.

%C Column 5 of A283522.

%H R. H. Hardin, <a href="/A283519/b283519.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

%Y Cf. A283522.

%K nonn

%O 1,2

%A _R. H. Hardin_, Mar 09 2017

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Last modified August 12 16:32 EDT 2022. Contains 356077 sequences. (Running on oeis4.)