OFFSET
1,1
COMMENTS
Column 4 of A186019
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..50
EXAMPLE
Some solutions for 4X6
..0..2..0..3..0..1....0..2..2..3..0..0....0..2..0..3..0..0....0..2..2..2..2..3
..0..0..0..2..0..2....0..0..0..0..1..2....0..0..0..0..0..0....0..0..0..2..2..2
..0..0..0..0..2..3....0..0..0..0..3..2....0..0..0..0..3..3....0..0..0..0..0..2
..0..0..2..0..1..1....0..0..2..0..1..0....0..0..2..0..1..2....0..0..2..0..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 10 2011
STATUS
approved