OFFSET
1,2
LINKS
Andrew Howroyd, Table of n, a(n) for n = 1..50
EXAMPLE
Some solutions for n=6:
.-4...-3...-2...-3...-3...-3...-3...-3...-3...-3...-3...-3...-2...-2...-2...-3
.-1....0...-1....0...-2....1....0...-2....1...-2...-2...-3....0....1....0...-2
..0....1....0....0....1....2....3....2...-3....2....2...-2....1...-1....1....1
..0....0....3....0....4...-2....0...-1....1....2....1....1....2....1....1....1
..4....2...-1....1...-1....0...-2....2....2....3....0....5...-2....0...-2....3
..1....0....1....2....1....2....2....2....2...-2....2....2....1....1....2....0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 04 2012
EXTENSIONS
a(15)-a(22) from Andrew Howroyd, Mar 12 2017
STATUS
approved