OFFSET
1,4
COMMENTS
Row 4 of A230571.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
EXAMPLE
Some solutions for n=4
..0..1..2..3....0..1..0..4....0..1..2..3....0..1..0..4....0..1..2..1
..0..4..4..0....2..3..3..2....0..4..4..0....2..3..2..1....2..3..0..4
..3..2..1..3....4..0..1..0....3..2..1..0....4..0..0..4....4..0..3..0
..1..0..4..3....2..3..4..3....1..3..4..3....1..2..3..2....1..2..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Oct 23 2013
STATUS
approved