1,1
Column 4 of A185614
Table of n, a(n) for n=1..6.
Some solutions for 3X5
..0..2..0..2..1....0..0..2..1..0....0..2..1..2..1....0..0..1..2..0
..1..0..2..0..1....1..1..1..2..0....1..1..1..1..1....1..1..0..1..1
..1..1..1..2..2....0..0..2..1..0....1..1..2..2..2....0..0..0..0..2
Sequence in context: A253464 A015294 A186870 * A232837 A252086 A212852
Adjacent sequences: A185610 A185611 A185612 * A185614 A185615 A185616
nonn
R. H. Hardin Jan 31 2011
approved