A300543 - OEIS

%I #4 Mar 08 2018 12:32:47

%S 3,129,2879,61561,1338834,29114990,632777378,13752553340,298894998879,

%T 6496115080739,141185007792788,3068481262669872,66689639658671547,

%U 1449416716033629216,31501277073963713498,684641239698193508103

%N Number of nX5 0..1 arrays with every element equal to 1, 2, 3 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

%C Column 5 of A300546.

%H R. H. Hardin, <a href="/A300543/b300543.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..0. .0..0..0..0..0. .0..0..0..0..0

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

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

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

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

%Y Cf. A300546.

%K nonn

%O 1,1

%A _R. H. Hardin_, Mar 08 2018