OFFSET
1,2
COMMENTS
Row 4 of A221937
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..24
EXAMPLE
Some solutions for n=3
..1..3..0....0..1..1....2..0..1....1..0..1....0..1..1....0..1..0....1..1..0
..0..0..1....3..0..1....1..0..0....1..3..0....3..0..1....2..3..0....1..4..0
..1..2..0....0..2..0....2..3..0....0..1..1....1..1..3....1..1..2....0..2..0
..2..1..1....2..1..1....1..1..1....2..1..1....0..1..0....1..0..1....0..2..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 01 2013
STATUS
approved