A209476 T(n,k)=Number of nXk 0..2 arrays with every element value z a city block distance of exactly z from another element value z

1, 2, 2, 5, 13, 5, 10, 93, 93, 10, 21, 635, 2262, 635, 21, 46, 4357, 46470, 46470, 4357, 46, 97, 27989, 872155, 2497939, 872155, 27989, 97, 207, 175599, 15763699, 128482557, 128482557, 15763699, 175599, 207, 437, 1097149, 283656566, 6446131005

Offset

1,2

Comments

Table starts

...1.......2..........5.............10................21....................46

...2......13.........93............635..............4357.................27989

...5......93.......2262..........46470............872155..............15763699

..10.....635......46470........2497939.........128482557............6446131005

..21....4357.....872155......128482557.......18325569581.........2562183150939

..46...27989...15763699.....6446131005.....2562183150939.......997395684898288

..97..175599..283656566...325528559843...361061356214305....390085680484869503

.207.1097149.5158628234.16644234605381.51319914886788615.153920252803630824532

Links

R. H. Hardin, Table of n, a(n) for n = 1..97

Example

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

Crossrefs

Sequence in context: A085289 A095339 A216025 * A209178 A209720 A208960

Adjacent sequences: A209473 A209474 A209475 * A209477 A209478 A209479

Keyword

nonn,tabl

Author

R. H. Hardin Mar 09 2012

Status

approved