A198184 Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 0,2,1,0,0 for x=0,1,2,3,4

3, 56, 395, 3485, 48958, 395340, 4522496, 41084248, 441157382, 4292509761, 44051823241, 438360876506, 4438621935572, 44610898968447, 449562512780134, 4527350842044875, 45564682527974566, 459054827920170371

Offset

1,1

Comments

Every 0 is next to 0 0'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 0's

Column 7 of A198185

Links

R. H. Hardin, Table of n, a(n) for n = 1..73

Example

Some solutions containing all values 0 to 4 for n=4
..1..2..1..0..1..1..0....2..1..0..3..0..3..0....1..0..3..0..3..0..1
..0..3..0..1..2..2..1....1..0..1..0..4..0..3....2..1..0..4..0..3..2
..1..0..4..0..3..0..1....1..2..2..3..0..3..0....0..1..3..0..3..0..1
..2..1..0..3..0..1..2....0..1..1..0..1..2..1....1..2..0..1..2..1..0

Crossrefs

Sequence in context: A111451 A285450 A280805 * A262398 A263886 A160876

Adjacent sequences: A198181 A198182 A198183 * A198185 A198186 A198187

Keyword

nonn

Author

R. H. Hardin Oct 21 2011

Status

approved