OFFSET
1,2
COMMENTS
Column 7 of A194893
EXAMPLE
Some solutions for 4X4
..0........0........0........0........0........0........0........0
..1.2......1.2......1.2......1.2......1.2......1.2......0.1......1.2
..3.4.5....3.4.4....3.0.1....3.3.0....3.3.4....3.2.0....2.3.4....3.3.4
..2.4.6.7..0.0.1.1..4.5.2.0..2.4.4.2..4.5.1.3..3.4.0.3..1.5.5.0..5.0.1.3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Sep 04 2011
STATUS
approved