login
Number of nX5 0..1 arrays with every element equal to 1, 2, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
1

%I #4 Apr 23 2018 10:39:43

%S 3,27,100,547,4013,21361,115770,803911,4667376,27684643,182192785,

%T 1120872960,6916763577,44766799474,282088259954,1776639929407,

%U 11435967743483,72802740854480,463125006110247,2975736132751591

%N Number of nX5 0..1 arrays with every element equal to 1, 2, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

%C Column 5 of A303410.

%H R. H. Hardin, <a href="/A303407/b303407.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A303410.

%K nonn

%O 1,1

%A _R. H. Hardin_, Apr 23 2018