A305774 - OEIS

%I #4 Jun 10 2018 09:42:04

%S 32,569,4172,38623,362200,3492739,33891076,329477646,3206311981,

%T 31221147593,304079486283,2961660465756,28846996288795,

%U 280978948410575,2736828664561312,26657663269633560,259655448460324811

%N Number of nX6 0..1 arrays with every element unequal to 0, 1, 2, 3, 5 or 7 king-move adjacent elements, with upper left element zero.

%C Column 6 of A305776.

%H R. H. Hardin, <a href="/A305774/b305774.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A305776.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jun 10 2018