A196980 Number of nX6 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,2,1,0,4 for x=0,1,2,3,4

6, 290, 6679, 156862, 3795662, 91153533, 2188092870, 52468355814, 1259904818890, 30260896396958, 726311424309641, 17435505488540779, 418593341337186977, 10049005361904800920, 241243533429917304743, 5791533057112464884540

Offset

1,1

Comments

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

Column 6 of A196982

Links

R. H. Hardin, Table of n, a(n) for n = 1..200

Example

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

Crossrefs

Sequence in context: A027875 A203422 A042119 * A197165 A264706 A066718

Adjacent sequences: A196977 A196978 A196979 * A196981 A196982 A196983

Keyword

nonn

Author

R. H. Hardin Oct 08 2011

Status

approved