A283098 - OEIS

A283098

Number of nX6 0..1 arrays with no 1 equal to more than one of its horizontal and vertical neighbors, with the exception of exactly two elements.

%I #4 Feb 28 2017 11:00:42

%S 5,606,31669,1237504,42681282,1354321470,40737147156,1177012522158,

%T 32993790452893,903014677129570,24240783265173009,640399679299433390,

%U 16692234830090081754,430127734274499659696,10974448860473249639158

%N Number of nX6 0..1 arrays with no 1 equal to more than one of its horizontal and vertical neighbors, with the exception of exactly two elements.

%C Column 6 of A283100.

%H R. H. Hardin, <a href="/A283098/b283098.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=3

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

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

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

%Y Cf. A283100.

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 28 2017