A240482 - OEIS

%I #6 Jul 23 2025 11:01:39

%S 32,857,13147,205754,3229199,50525365,790390105,12362251350,

%T 193349390970,3024029579084,47296906966344,739741508375580,

%U 11569834430771221,180956563241125060,2830228892630338461,44265847226767482110

%N Number of nX6 0..1 arrays with no element equal to more than two horizontal or vertical neighbors, with new values 0..1 introduced in row major order.

%C Column 6 of A240484

%H R. H. Hardin, <a href="/A240482/b240482.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=3

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Apr 06 2014