A209607 - OEIS

%I #5 Mar 31 2012 12:37:29

%S 2,170,6218,151736,3833954,95442732,2375975754,59592537600,

%T 1495366951690,37503163842366,940455006943040,23582406579072110,

%U 591339672010632278,14828301442081160268,371832301227736747532,9324007193364231632484

%N Number of nX5 1..2 arrays with every element value z a city block distance of exactly z from another element value z

%C Column 5 of A209610

%H R. H. Hardin, <a href="/A209607/b209607.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Mar 10 2012