OFFSET
1,1
COMMENTS
Table starts
........81.........459..........2601..........15759..........95481
.......459........4401.........43163.........459821........4911675
......2601.......43163........746017.......14219749......272110811
.....15759......459821......14219749......492135291....17133244697
.....95481.....4911675.....272110811....17133244697..1088246684231
....586791....53575889....5344196941...615149254565.71600778588343
...3606201...584520435..105022040225.22112885527475
..22235391..6415409881.2080498882227
.137100681.70404186587
.845893287
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..60
EXAMPLE
Some solutions for 3X3
..1..1..2....1..1..1....2..1..1....1..1..1....1..2..0....1..2..1....1..0..0
..2..2..0....0..0..0....1..2..2....0..1..0....0..1..1....1..1..1....2..2..2
..0..2..2....1..1..0....2..0..2....1..1..1....2..0..1....2..1..1....2..0..1
...
...6..5.......2..2.......6..6.......3..3.......4..4.......5..5.......5..4...
...6..6.......2..1.......5..6.......3..3.......3..3.......5..4.......6..5...
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Jan 08 2011
STATUS
approved