%I #4 Mar 31 2012 12:37:28

%S 3,152,22416,4488765,816320455

%N Number of nX4 1..4 arrays with every element value z a city block distance of exactly z from another element value z

%C Column 4 of A209394

%e Some solutions for n=3

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Mar 07 2012