|
%I #5 Dec 18 2015 18:18:29
%S 1,10,1154,1780641,12483535858,1092037282618789,408653905036011361072,
%T 1924878822883438537017070318,37532720906358968019501781345379199
%N Number of n X n 0..2 arrays with no more than floor(n X n/2) elements equal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..2 order
%C Diagonal of A223126
%e Some solutions for n=3
%e ..0..1..0....0..1..2....0..1..0....0..1..0....0..1..0....0..1..2....0..1..2
%e ..2..0..1....1..1..0....0..2..2....2..0..1....2..2..2....0..1..1....0..0..1
%e ..2..0..0....0..1..2....1..0..1....2..2..1....1..2..0....2..1..2....1..0..1
%K nonn
%O 1,2
%A _R. H. Hardin_ Mar 15 2013
| 