A197621 - OEIS

A197621

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

0, 32, 154, 863, 8593, 68656, 714768, 5434981, 50877414, 471428527, 4205213351, 37577387285, 339146064380, 3071290023220, 27576889934192, 248373790147986, 2239574144400932, 20171377813567936, 181663159564517992

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

COMMENTS

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

Column 6 of A197623

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

..2..1..1..3..1..0....2..1..1..2..2..1....0..2..1..3..1..1....1..0..1..3..1..2

..1..3..1..1..4..1....1..3..3..1..1..3....2..1..0..1..1..3....3..1..4..1..0..1

..1..3..1..1..1..3....2..1..1..1..4..1....1..3..2..1..4..1....1..4..1..0..1..3

..2..1..1..3..1..1....0..2..1..3..1..2....0..1..1..3..1..0....0..1..3..1..0..1

CROSSREFS

Sequence in context: A203557 A124998 A126419 * A318159 A035286 A298219

Adjacent sequences: A197618 A197619 A197620 * A197622 A197623 A197624

KEYWORD

nonn

AUTHOR

R. H. Hardin Oct 16 2011

STATUS

approved