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 4 of A198185
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
..0..1..2..1....1..2..1..0....1..2..1..0....0..1..1..2....1..0..1..2
..3..0..3..0....0..3..0..3....0..3..0..3....1..2..0..1....2..3..0..1
..0..4..0..1....3..0..4..0....1..0..4..0....1..0..4..0....1..0..4..0
..3..0..3..2....0..3..0..3....2..3..0..1....2..3..0..1....0..3..0..3
..0..3..0..1....1..2..1..0....1..0..1..2....1..0..1..2....1..2..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Oct 21 2011
STATUS
approved