A209392 Number of nX3 1..4 arrays with every element value z a city block distance of exactly z from another element value z

1, 16, 488, 22416, 978956, 32651213, 1094498759, 36547403754

Offset

1,2

Comments

Column 3 of A209394

Links

Table of n, a(n) for n=1..8.

Example

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

Crossrefs

Sequence in context: A283327 A185367 A209352 * A209022 A209057 A209214

Adjacent sequences: A209389 A209390 A209391 * A209393 A209394 A209395

Keyword

nonn

Author

R. H. Hardin Mar 07 2012

Status

approved