%I #8 Jun 06 2018 15:18:42
%S 1,14,1625,1414023,7241587334,235596375117548,47431914936748228227
%N Number of n X n 0..2 arrays with no occurrence of three equal elements in a row horizontally or vertically, and new values 0..2 introduced in row major order.
%e Some solutions for n=4
%e ..0..0..1..1....0..0..1..2....0..0..1..0....0..0..1..2....0..0..1..0
%e ..1..1..0..1....1..2..2..0....1..0..0..1....2..2..0..2....0..1..2..0
%e ..2..2..1..0....1..2..1..1....2..2..1..2....2..0..1..0....1..2..2..1
%e ..1..1..0..0....2..0..1..1....0..0..2..0....0..2..1..0....0..1..1..2
%Y Diagonal of A206650.
%K nonn
%O 1,2
%A _R. H. Hardin_, Feb 11 2012
|