A209813 - OEIS

%I #5 Mar 31 2012 12:37:30

%S 173789,23398105,3428713825,555404234236,91909548662623,

%T 15504605303759031,2632434564856390561,449096913581005026335,

%U 76776883203141578986271,13144329639287431608225799

%N Number of (n+1)X8 0..3 arrays with every 2X2 subblock having two distinct values, and new values 0..3 introduced in row major order

%C Column 7 of A209814

%H R. H. Hardin, <a href="/A209813/b209813.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Mar 13 2012