OFFSET
1,2
COMMENTS
Diagonal of A263597.
EXAMPLE
Some solutions for n=6
..0....0....5....4....0....4....4....4....1....5....2....3....1....0....0....4
..1....3....0....2....2....2....1....0....2....2....0....1....2....5....3....1
..2....2....2....0....5....1....0....1....4....1....4....2....0....2....2....0
..3....1....3....5....3....5....2....3....0....3....3....4....3....1....4....5
..4....4....1....3....1....3....3....5....3....4....1....5....4....3....5....2
..5....5....4....1....4....0....5....2....5....0....5....0....5....4....1....3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Oct 22 2015
STATUS
approved