login
Number of nX2 0..2 arrays with exactly floor(nX2/2) elements equal to at least one king-move neighbor, with new values introduced in row major 0..2 order
1

%I #5 Mar 12 2013 04:08:45

%S 0,6,16,58,136,352,768,1752,3680,7904,16256,33824,68736,140544,283648,

%T 574336,1154560,2324992,4663296,9361920,18753536,37584896,75235328,

%U 150640640,301424640,603217920,1206747136,2414288896,4829249536

%N Number of nX2 0..2 arrays with exactly floor(nX2/2) elements equal to at least one king-move neighbor, with new values introduced in row major 0..2 order

%C Column 2 of A223033

%H R. H. Hardin, <a href="/A223028/b223028.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=3

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

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

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

%K nonn

%O 1,2

%A _R. H. Hardin_ Mar 12 2013