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%I #6 Mar 31 2012 12:37:28
%S 1,2,5,12,33,99,319,1079,3555,11300,35863,111731,352219,1103216,
%T 3517983,11225970,35689268,113349420,359442201,1137949882,3593078597,
%U 11345200954,35855116040,113443380209,358576231579,1134002435072,3586987559568
%N Number of nX1 0..7 arrays with every element value z a city block distance of exactly z from another element value z
%C Column 1 of A209218
%H R. H. Hardin, <a href="/A209216/b209216.txt">Table of n, a(n) for n = 1..68</a>
%e Some solutions for n=8
%e ..2....0....3....4....0....1....5....2....5....3....1....0....3....0....0....7
%e ..3....4....3....0....3....1....3....2....5....1....1....0....0....4....2....0
%e ..2....2....0....1....1....0....0....2....1....1....1....0....2....2....2....0
%e ..0....0....3....1....1....0....3....2....1....3....0....4....3....3....2....0
%e ..3....2....3....4....3....3....3....0....1....1....1....0....2....2....2....0
%e ..1....4....2....1....0....1....5....2....5....1....1....0....0....4....1....1
%e ..1....2....0....1....1....1....3....0....5....0....1....0....1....3....1....1
%e ..3....0....2....0....1....3....0....2....0....0....0....4....1....0....1....7
%K nonn
%O 1,2
%A _R. H. Hardin_ Mar 06 2012
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