OFFSET
1,1
COMMENTS
Column 7 of A189650
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..78
EXAMPLE
Some solutions for 3X7
..0..7..2..4..3..5.12....0..7.10..2..3..6..5....0..2..3..9..5..4..6
..1..9.15.10.11..6.13....1..9.15.11.19..4.12....1.14.15.10.12.11.19
..8.14.16.17.18.20.19....8.14.16.17.18.13.20....8..7.16.18.17.13.20
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Apr 24 2011
STATUS
approved