A209022 Number of nX3 1..5 arrays with every element value z a city block distance of exactly z from another element value z

1, 16, 488, 26029, 1745235, 116464240

Offset

1,2

Comments

Column 3 of A209023

Links

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

Example

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

Crossrefs

Sequence in context: A185367 A209352 A209392 * A209057 A209214 A183890

Adjacent sequences: A209019 A209020 A209021 * A209023 A209024 A209025

Keyword

nonn

Author

R. H. Hardin Mar 04 2012

Status

approved