A240641 - OEIS

%I #4 Apr 09 2014 19:08:19

%S 41,10072,2413198,579476701,139138607313,33408897045776,

%T 8021872340896987,1926147852876420067,462491172805951156774,

%U 111049673372896355573468,26664357370024596504291771,6402431748862885892818595024

%N Number of nX6 0..3 arrays with no element equal to one or three horizontal or vertical neighbors, with new values 0..3 introduced in row major order

%C Column 6 of A240642

%H R. H. Hardin, <a href="/A240641/b240641.txt">Table of n, a(n) for n = 1..31</a>

%e Some solutions for n=2

%e ..0..1..0..1..2..0....0..1..2..0..3..2....0..1..0..1..2..0....0..1..2..0..2..1

%e ..1..3..2..0..1..2....3..2..0..1..2..0....3..0..1..3..0..1....1..3..0..2..0..2

%K nonn

%O 1,1

%A _R. H. Hardin_, Apr 09 2014