A318420 - OEIS

%I #4 Aug 26 2018 11:14:07

%S 1,5,5,71,129,280,839,2717,8803,25414,74518,227494,702137,2143691,

%T 6482983,19639879,59787428,182279554,554882961,1687253474,5131113671,

%U 15614188211,47523441803,144618256222,440018989420,1338830460614

%N Number of nX5 0..1 arrays with every element unequal to 0, 2, 3 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

%C Column 5 of A318423.

%H R. H. Hardin, <a href="/A318420/b318420.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A318423.

%K nonn

%O 1,2

%A _R. H. Hardin_, Aug 26 2018