A209052 Number of nX2 0..6 arrays with every element value z a city block distance of exactly z from another element value z

2, 13, 115, 1468, 22738, 415695, 7893620, 136638297, 2269919266

Offset

1,1

Comments

Column 2 of A209054

Links

Table of n, a(n) for n=1..9.

Example

Some solutions for n=5
..2..4....4..4....2..4....4..4....0..3....4..0....1..1....5..1....4..3....1..0
..1..2....0..0....3..3....0..0....4..2....1..3....4..4....2..1....2..3....1..1
..1..1....1..1....2..3....2..0....2..0....1..1....1..0....2..0....3..3....1..0
..0..1....1..1....3..0....4..4....1..3....3..4....1..1....2..0....2..4....0..1
..0..4....4..4....3..4....2..0....1..4....0..3....4..4....2..5....3..3....1..1

Crossrefs

Sequence in context: A209174 A209718 A208958 * A209217 A000180 A215715

Adjacent sequences: A209049 A209050 A209051 * A209053 A209054 A209055

Keyword

nonn

Author

R. H. Hardin Mar 04 2012

Status

approved