A197340 Number of nX6 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,3,2,1,2 for x=0,1,2,3,4

1, 37, 297, 2864, 25336, 238206, 2218128, 20616615, 191742443, 1785824065, 16629090574, 154844024184, 1441946937763, 13428059890422, 125048396631303, 1164514063002820, 10844571608332582, 100990468863127178

Offset

1,2

Comments

Every 0 is next to 0 3's, every 1 is next to 1 3's, every 2 is next to 2 2's, every 3 is next to 3 1's, every 4 is next to 4 2's

Column 6 of A197342

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

Some solutions containing all values 0 to 4 for n=4
..0..0..0..1..3..1....2..2..2..0..0..0....0..0..2..2..2..0....0..0..0..0..0..1
..0..2..2..2..1..0....2..0..2..2..0..1....0..1..2..4..2..2....2..2..2..0..1..3
..0..2..4..2..0..0....2..2..4..2..1..3....1..3..2..2..4..2....2..4..2..0..1..1
..0..2..2..2..0..0....0..2..2..2..0..1....0..1..0..2..2..2....2..2..2..1..3..1

Crossrefs

Sequence in context: A200889 A211156 A217642 * A165373 A165292 A114785

Adjacent sequences: A197337 A197338 A197339 * A197341 A197342 A197343

Keyword

nonn

Author

R. H. Hardin Oct 13 2011

Status

approved