|
%I #4 May 28 2018 08:42:40
%S 64,432,343,2128,11731,55039,311014,1742187,9652212,54215925,
%T 304136859,1705204672,9572981971,53722180818,301526832227,
%U 1692432742507,9499376400246,53319042252526,299275626808768,1679809896380902
%N Number of nX7 0..1 arrays with every element unequal to 0, 1, 2, 4 or 8 king-move adjacent elements, with upper left element zero.
%C Column 7 of A305245.
%H R. H. Hardin, <a href="/A305244/b305244.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=5
%e ..0..0..0..0..0..0..0. .0..0..1..1..0..1..1. .0..0..1..0..0..1..1
%e ..0..0..1..0..0..1..0. .0..0..0..0..0..0..0. .1..1..1..1..1..1..1
%e ..0..0..0..0..0..0..0. .0..0..0..0..0..0..0. .1..1..1..1..1..1..1
%e ..1..0..0..0..0..1..0. .0..0..0..0..0..0..0. .1..1..1..1..1..1..1
%e ..0..1..0..0..0..0..0. .0..0..0..0..0..0..0. .1..0..0..1..1..0..0
%Y Cf. A305245.
%K nonn
%O 1,1
%A _R. H. Hardin_, May 28 2018
| 