OFFSET
1,1
COMMENTS
Every 0 is next to 0 3's, every 1 is next to 1 2'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 4 of A197782
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
EXAMPLE
Some solutions containing all values 0 to 4 for n=5
..1..3..1..2....1..3..1..2....0..1..0..0....0..1..2..0....2..1..0..0
..2..1..4..1....2..1..4..1....0..2..2..1....2..1..1..0....1..4..1..2
..0..0..1..3....0..1..1..0....0..1..1..3....1..4..1..2....3..1..1..1
..1..2..2..1....1..2..2..1....2..1..4..1....3..1..1..1....1..2..2..1
..0..1..0..0....0..0..0..0....1..0..1..2....1..2..2..1....0..0..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Oct 18 2011
STATUS
approved