A209218 T(n,k)=Number of nXk 0..7 arrays with every element value z a city block distance of exactly z from another element value z

1, 2, 2, 5, 13, 5, 12, 115, 115, 12, 33, 1468, 5822, 1468, 33, 99, 22738, 459808, 459808, 22738, 99, 319, 415695, 49062184, 245980249, 49062184, 415695, 319, 1079, 8685016

Offset

1,2

Comments

Table starts

...1......2........5........12.......33.....99.....319.1079

...2.....13......115......1468....22738.415695.8685016

...5....115.....5822....459808.49062184

..12...1468...459808.245980249

..33..22738.49062184

..99.415695

.319

Links

Table of n, a(n) for n=1..30.

Example

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

Crossrefs

Sequence in context: A209720 A208960 A209054 * A208322 A208175 A078413

Adjacent sequences: A209215 A209216 A209217 * A209219 A209220 A209221

Keyword

nonn,tabl

Author

R. H. Hardin Mar 06 2012

Status

approved