A295049 - OEIS

%I #4 Nov 13 2017 06:40:03

%S 21,299,3879,52199,700972,9388654,125887202,1687776548,22627774940,

%T 303374187415,4067381827553,54531991863699,731118983022104,

%U 9802227619735676,131420017672187029,1761969037670761907

%N Number of nX6 0..1 arrays with each 1 horizontally or vertically adjacent to 0 or 2 1s.

%C Column 6 of A295051.

%H R. H. Hardin, <a href="/A295049/b295049.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

%Y Cf. A295051.

%K nonn

%O 1,1

%A _R. H. Hardin_, Nov 13 2017