A282967 - OEIS

A282967

Number of nX6 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 17:47:32

%S 5,295,12160,346172,8716978,206993155,4646063540,100644923252,

%T 2119718238840,43654941219187,882953024491719,17591662057304511,

%U 346073785949526238,6734717496325549094,129835327797213984166

%N Number of nX6 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 6 of A282969.

%H R. H. Hardin, <a href="/A282967/b282967.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=3

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

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

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

%Y Cf. A282969.

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 25 2017