%I #4 Mar 25 2018 11:37:01

%S 5,162,1498,14394,146841,1537496,15498505,159497778,1631501428,

%T 16710326446,171088097185,1752145711420,17940714321741,

%U 183715971451846,1881222389643034,19263608263871012,197257711048154849

%N Number of nX6 0..1 arrays with every element equal to 1, 2 or 4 horizontally or vertically adjacent elements, with upper left element zero.

%C Column 6 of A301669.

%H R. H. Hardin, <a href="/A301667/b301667.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A301669.

%K nonn

%O 1,1

%A _R. H. Hardin_, Mar 25 2018