A197534 Number of nX5 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 2,0,1,0,0 for x=0,1,2,3,4

9, 73, 868, 9373, 107655, 1220630, 14056707, 162042137, 1874230689, 21698542215, 251403042154, 2913819348602, 33779087426950, 391635814747885, 4540933400612193, 52653016886940873, 610534294176601038

Offset

1,1

Comments

Every 0 is next to 0 2'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 0's

Column 5 of A197537

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

Crossrefs

Sequence in context: A199677 A197676 A367977 * A015465 A144782 A218872

Adjacent sequences: A197531 A197532 A197533 * A197535 A197536 A197537

Keyword

nonn

Author

R. H. Hardin Oct 16 2011

Status

approved