A209057 Number of nX3 1..6 arrays with every element value z a city block distance of exactly z from another element value z

1, 16, 488, 26029, 1958627, 183162200

Offset

1,2

Comments

Column 3 of A209058

Links

Table of n, a(n) for n=1..6.

Example

Some solutions for n=4
..3..4..3....3..4..3....4..4..1....3..4..4....5..2..4....2..3..5....2..4..4
..1..1..3....1..2..3....2..1..1....2..2..3....2..2..2....1..2..2....2..2..2
..3..3..2....1..1..1....2..2..4....4..2..2....2..2..3....1..1..1....4..1..1
..4..2..3....4..2..3....2..2..4....4..4..4....3..4..5....5..3..2....1..1..4

Crossrefs

Sequence in context: A209352 A209392 A209022 * A209214 A183890 A250400

Adjacent sequences: A209054 A209055 A209056 * A209058 A209059 A209060

Keyword

nonn

Author

R. H. Hardin Mar 04 2012

Status

approved