A208958 Number of nX2 0..5 arrays with every element value z a city block distance of exactly z from another element value z

2, 13, 115, 1468, 22738, 372075, 5462165, 77163978, 1084707732, 15547260908, 225219771040

Offset

1,1

Comments

Column 2 of A208960

Links

Table of n, a(n) for n=1..11.

Example

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

Crossrefs

Sequence in context: A258620 A209174 A209718 * A209052 A209217 A000180

Adjacent sequences: A208955 A208956 A208957 * A208959 A208960 A208961

Keyword

nonn

Author

R. H. Hardin Mar 03 2012

Status

approved