A204953 - OEIS

%I #4 Mar 31 2012 12:37:03

%S 108053748,5530809140,310518886748,13020576504578,852919335897276

%N Number of (n+2)X9 0..2 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically, diagonally or antidiagonally exactly two different ways, and new values 0..2 introduced in row major order

%C Column 7 of A204954

%e Some solutions for n=3

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 20 2012