|
%I #3 Sep 13 2012 05:33:46
%S 2,25,780,59799,8990804,2315439963,928319229295
%N Number of horizontal, vertical or knight-move neighbor colorings of an nX3 array with new integer colors introduced in row major order
%C Column 3 of A216663
%e Some solutions for n=2
%e ..0..1..0....0..1..0....0..1..2....0..1..2....0..1..0....0..1..2....0..1..2
%e ..2..3..4....2..0..3....3..0..1....3..4..5....2..0..2....1..3..4....3..2..4
%K nonn
%O 1,1
%A _R. H. Hardin_ Sep 13 2012
| 