A303627 - OEIS

%I #4 Apr 27 2018 09:57:48

%S 16,6,616,1870,37910,350410,5249045,70522741,1042683911,15412143256,

%T 231857391297,3507294376595,53265758197769,810914386664759,

%U 12360167854003888,188554666107041773,2877613349788302762

%N Number of 5Xn 0..1 arrays with every element equal to 0, 2, 3, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

%C Row 5 of A303624.

%H R. H. Hardin, <a href="/A303627/b303627.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A303624.

%K nonn

%O 1,1

%A _R. H. Hardin_, Apr 27 2018