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%I #5 Mar 31 2012 12:37:28
%S 1,16,409,10796,207438,3706083,63071815,1032759720,16901510507,
%T 277570939815,4565625401732,75505210777685,1255197541721876,
%U 20903758632822412,348175364757271477,5794989272920621165
%N Number of nX3 1..3 arrays with every element value z a city block distance of exactly z from another element value z
%C Column 3 of A209365
%H R. H. Hardin, <a href="/A209362/b209362.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=4
%e ..3..3..3....3..3..2....3..1..3....3..1..1....2..1..1....2..3..3....1..1..1
%e ..3..3..3....3..2..2....3..1..3....2..3..3....1..1..3....3..2..2....2..2..3
%e ..3..1..3....2..3..3....1..1..3....2..3..2....2..2..2....3..2..3....3..2..3
%e ..3..1..3....2..3..2....3..1..3....2..3..3....2..3..2....3..2..3....3..2..2
%K nonn
%O 1,2
%A _R. H. Hardin_ Mar 06 2012
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