|
%I #4 Aug 12 2018 19:45:11
%S 32,257,1382,9063,60157,400016,2495323,16110625,103827789,672266391,
%T 4358202529,28286904449,183768652418,1194433177052,7767233878635,
%U 50519999745212,328673287698990,2138526574564068,13915945230318569
%N Number of nX6 0..1 arrays with every element unequal to 0, 1, 2 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
%C Column 6 of A318024.
%H R. H. Hardin, <a href="/A318022/b318022.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=5
%e ..0..0..0..0..0..1. .0..1..0..0..0..1. .0..0..1..0..0..0. .0..0..0..1..0..0
%e ..0..0..0..0..0..1. .1..1..0..0..1..1. .0..0..0..0..0..0. .0..0..0..0..0..0
%e ..0..0..0..0..0..1. .1..1..0..0..0..0. .1..0..0..0..0..0. .0..1..0..0..0..0
%e ..1..1..1..0..0..1. .1..1..0..0..0..0. .0..0..1..0..0..0. .1..1..0..1..1..0
%e ..1..1..0..0..0..1. .0..0..0..0..0..0. .0..1..1..0..1..0. .0..0..0..1..0..0
%Y Cf. A318024.
%K nonn
%O 1,1
%A _R. H. Hardin_, Aug 12 2018
| 