OFFSET
1,2
COMMENTS
Column 7 of A271034.
EXAMPLE
Some solutions for n=3
....0......4......1......3......0......5......1......1......1......2......0
...0.4....0.4....4.1....4.4....0.0....2.6....0.2....1.2....4.3....0.3....0.1
..0.0.6..0.4.6..5.6.6..7.4.7..6.2.3..2.6.6..0.7.7..3.2.6..5.5.7..1.5.5..5.1.4
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 29 2016
STATUS
approved