OFFSET
1,1
COMMENTS
Column 3 of A186553
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..199
EXAMPLE
Some solutions for 4X5
..0..2..0..0..0....0..1..3..0..2....1..1..0..0..2....1..2..2..0..0
..2..0..1..3..3....0..0..0..0..3....0..0..0..2..2....2..0..0..1..3
..0..0..2..2..2....0..0..0..2..0....0..0..0..0..1....0..0..2..1..0
..0..0..0..3..2....0..0..0..2..0....0..0..0..0..3....0..0..0..0..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 23 2011
STATUS
approved