OFFSET
1,1
COMMENTS
Column 7 of A185993
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..61
EXAMPLE
Some solutions for 4X9
..0..0..1..0..0..1..0..0..0....0..0..0..1..1..1..1..0..1
..0..0..0..0..1..1..0..0..0....0..0..0..0..0..1..0..0..1
..0..0..0..0..0..0..0..0..1....0..0..0..0..0..1..0..0..0
..0..0..0..0..0..1..1..1..1....0..0..0..0..0..0..1..0..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 08 2011
STATUS
approved