|
%I #6 Dec 18 2015 18:18:04
%S 1,13,2262,2497939,18325569581,997395684898288,423899279234753748599
%N Number of n X n 0..2 arrays with every element value z a city block distance of exactly z from another element value z
%C Diagonal of A209476
%e Some solutions for n=3
%e ..2..2..2....0..2..2....2..1..1....0..1..2....1..1..1....0..1..1....2..2..0
%e ..1..1..2....1..1..1....2..2..2....2..1..2....1..0..0....2..2..1....0..0..2
%e ..2..0..2....0..2..2....2..0..2....0..1..2....0..0..0....2..2..1....2..0..0
%K nonn
%O 1,2
%A _R. H. Hardin_ Mar 09 2012
| 