OFFSET
1,1
COMMENTS
Every 0 is next to 0 1's, every 1 is next to 1 3's, every 2 is next to 2 0's, every 3 is next to 3 4's, every 4 is next to 4 2's
Column 7 of A196329
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..200
EXAMPLE
Some solutions for n=4
..0..2..0..2..2..0..2....0..0..0..2..2..0..2....0..0..0..0..0..2..0
..2..2..0..0..0..0..0....2..2..2..0..0..0..0....0..0..0..0..2..2..0
..0..0..0..0..0..0..0....0..0..2..2..2..2..2....0..0..0..2..2..0..0
..0..2..2..0..2..2..0....2..0..0..0..0..0..0....0..0..0..2..0..0..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Oct 01 2011
STATUS
approved