OFFSET
1,1
COMMENTS
Row 4 of A213990
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..40
EXAMPLE
Some solutions for n=3
..0..2..1..0....1..0..2..3....0..1..1..2....0..0..1..0....1..0..0..0
..0..0..0..0....0..1..1..0....0..1..0..0....0..0..1..2....0..0..1..2
..0..3..0..0....0..0..0..0....0..0..0..0....1..0..0..0....0..0..1..3
..1..2..0..0....0..0..0..0....1..1..0..0....1..0..0..0....1..0..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jun 30 2012
STATUS
approved