A197669 Number of nX5 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,0,1,0,1 for x=0,1,2,3,4

9, 217, 2765, 44323, 709083, 11277331, 178113620, 2824369075, 44803424135, 710299706355, 11259206241825, 178502455899971, 2830080961456550, 44867619862024252, 711321096455186766, 11277240691421407939

Offset

1,1

Comments

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

Column 5 of A197672

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

Crossrefs

Sequence in context: A211044 A152288 A179153 * A368632 A371684 A157692

Adjacent sequences: A197666 A197667 A197668 * A197670 A197671 A197672

Keyword

nonn

Author

R. H. Hardin Oct 17 2011

Status

approved