login
Number of horizontal, vertical, diagonal or knight-move neighbor colorings of an nX3 array with new integer colors introduced in row major order
0

%I #3 Sep 14 2012 06:20:37

%S 2,9,189,11730,1561834,370625430,139733635588

%N Number of horizontal, vertical, diagonal or knight-move neighbor colorings of an nX3 array with new integer colors introduced in row major order

%C Column 3 of A216694

%e Some solutions for n=2

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

%e ..3..4..3....3..4..5....3..2..4....2..3..2....3..2..3....1..3..4....1..2..3

%K nonn

%O 1,1

%A _R. H. Hardin_ Sep 14 2012