OFFSET
1,1
COMMENTS
Diagonal of A186488
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..18
EXAMPLE
Some solutions for 3X3
..5..6..0....4..5..0....6..4..0....0..0..4....3..2..0....0..0..0....3..3..0
..3..0..6....0..0..5....1..0..4....0..0..4....0..0..2....1..0..0....1..0..3
..0..3..5....0..0..3....0..1..4....0..0..4....0..0..2....6..1..0....0..1..5
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 22 2011
STATUS
approved