OFFSET
1,2
COMMENTS
Diagonal of A188236
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..22
EXAMPLE
Some solutions for n=4
.-1...-3...-3...-3...-4...-5...-6...-5...-4...-5...-3...-3...-2...-6...-2...-4
.-1....0...-2...-1...-1...-2...-1....0....1...-1...-1...-3...-2...-4...-1...-4
..1....1....0....1...-1....1....2....2....1....2....2....3....2....4....0....2
..1....2....5....3....6....6....5....3....2....4....2....3....2....6....3....6
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 24 2011
STATUS
approved