A300496 - OEIS

%I #4 Mar 07 2018 07:23:30

%S 32,383,1225,4686,19412,77582,291721,1136238,4513729,17926620,

%T 71353153,285746599,1148732959,4625632297,18656369104,75377936665,

%U 304942015454,1234692860103,5002729802528,20282370113077,82267894854426

%N Number of nX6 0..1 arrays with every element equal to 0, 1, 2 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

%C Column 6 of A300498.

%H R. H. Hardin, <a href="/A300496/b300496.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A300498.

%K nonn

%O 1,1

%A _R. H. Hardin_, Mar 07 2018