OFFSET
1,1
COMMENTS
Column 4 of A257270
EXAMPLE
Some solutions for n=1
..0..0..0..0..2..1....0..0..0..1..1..0....0..0..0..2..0..0....0..0..0..2..2..0
..0..0..1..1..0..2....1..2..0..2..1..2....1..1..0..2..2..2....0..1..1..1..1..0
..0..0..0..0..2..2....0..0..1..1..2..2....0..0..0..2..1..1....0..0..0..2..2..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 19 2015
STATUS
approved