A197215 Number of nX6 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,3,2,1,0 for x=0,1,2,3,4

1, 37, 479, 5982, 84893, 1130812, 15034832, 202026037, 2712108937, 36354079627, 487366238398, 6535360303819, 87635492801648, 1175117242216066, 15757048234536205, 211285700462837436, 2833150080279284040

Offset

1,2

Comments

Every 0 is next to 0 4'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 0's

Column 6 of A197217

Links

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

Example

Some solutions for n=4
..0..0..2..2..0..0....0..0..2..2..0..0....0..0..0..1..3..1....0..0..2..2..2..0
..1..0..2..2..0..0....0..1..2..2..0..1....1..3..1..0..1..1....2..2..2..0..2..2
..3..1..0..0..0..0....1..3..0..0..1..3....0..1..0..1..1..3....2..0..0..0..0..2
..1..0..0..0..0..0....0..1..0..0..0..1....0..0..1..3..1..1....2..2..2..2..2..2

Crossrefs

Sequence in context: A166132 A342901 A086025 * A264419 A197240 A220331

Adjacent sequences: A197212 A197213 A197214 * A197216 A197217 A197218

Keyword

nonn

Author

R. H. Hardin Oct 11 2011

Status

approved