OFFSET
1,2
COMMENTS
Column 5 of A230398
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..23
EXAMPLE
Some solutions for n=4
..0..1..2..3..4....0..1..0..4..1....0..4..3..2..1....0..1..3..4..3
..2..0..4..1..0....4..2..0..1..2....1..1..2..2..1....3..2..1..0..4
..3..4..3..2..4....2..3..4..4..3....2..0..1..3..0....4..1..1..4..1
..2..3..0..1..3....1..2..1..0..4....3..4..0..4..4....0..1..2..3..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Oct 18 2013
STATUS
approved