A296640 - OEIS

%I #4 Dec 17 2017 15:10:21

%S 12,279,3444,49872,742601,10781621,157255466,2296958734,33523275696,

%T 489291324927,7141941507836,104245214093823,1521582051098930,

%U 22209336054925012,324172090472099899,4731682732442250173

%N Number of nX5 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 1, 2 or 4 neighboring 1s.

%C Column 5 of A296643.

%H R. H. Hardin, <a href="/A296640/b296640.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

%Y Cf. A296643.

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 17 2017