OFFSET
1,1
COMMENTS
Column 3 of A248842.
Essentially the same as A135106. - Georg Fischer, Oct 23 2018
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
EXAMPLE
Some solutions for n=6
..0....1....0....1....0....0....1....1....1....0....0....0....0....0....0....1
..2....1....0....2....1....1....1....1....1....1....1....0....0....0....1....1
..2....0....0....0....1....1....2....2....0....3....0....2....3....3....2....2
..1....0....3....0....0....1....4....4....1....0....1....1....2....4....4....1
..5....0....2....2....3....4....5....2....2....4....4....0....1....0....5....5
..3....5....3....1....5....2....5....2....5....0....2....5....0....2....0....6
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Oct 15 2014
STATUS
approved