A282966 - OEIS

A282966

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

%I #4 Feb 25 2017 17:46:48

%S 2,75,2012,35870,577003,8716978,124683166,1722329260,23131988665,

%T 303943320975,3922864361193,49884634204045,626460395324048,

%U 7783341691487342,95809806339522244,1169851278932453293

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

%C Column 5 of A282969.

%H R. H. Hardin, <a href="/A282966/b282966.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

%Y Cf. A282969.

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 25 2017