A209827 - OEIS

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

%S 33725,4998707,773359089,122849339000,19693265761805,3169393696357783,

%T 510927200467908535,82424301419377854606,13301092381577339804554,

%U 2146734609278246230819637,346493487528033789867228222

%N Number of (n+1)X7 0..2 arrays with every 2X2 subblock having one or two distinct values, and new values 0..2 introduced in row major order

%C Column 6 of A209829

%H R. H. Hardin, <a href="/A209827/b209827.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Mar 13 2012