A209176 Number of nX4 0..3 arrays with every element value z a city block distance of exactly z from another element value z

12, 1243, 236727, 43361446, 6170585599, 815113744488, 103803050876877, 13009082234406309, 1639685959850389986, 207628870678244320910

Offset

1,1

Comments

Column 4 of A209178

Links

Table of n, a(n) for n=1..10.

Example

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

Crossrefs

Sequence in context: A009155 A078296 A239164 * A351630 A137343 A133461

Adjacent sequences: A209173 A209174 A209175 * A209177 A209178 A209179

Keyword

nonn

Author

R. H. Hardin Mar 05 2012

Status

approved