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A209362
Number of nX3 1..3 arrays with every element value z a city block distance of exactly z from another element value z
1
1, 16, 409, 10796, 207438, 3706083, 63071815, 1032759720, 16901510507, 277570939815, 4565625401732, 75505210777685, 1255197541721876, 20903758632822412, 348175364757271477, 5794989272920621165
OFFSET
1,2
COMMENTS
Column 3 of A209365
LINKS
EXAMPLE
Some solutions for n=4
..3..3..3....3..3..2....3..1..3....3..1..1....2..1..1....2..3..3....1..1..1
..3..3..3....3..2..2....3..1..3....2..3..3....1..1..3....3..2..2....2..2..3
..3..1..3....2..3..3....1..1..3....2..3..2....2..2..2....3..2..3....3..2..3
..3..1..3....2..3..2....3..1..3....2..3..3....2..3..2....3..2..3....3..2..2
CROSSREFS
Sequence in context: A202733 A261833 A172205 * A338800 A318220 A035275
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 06 2012
STATUS
approved