OFFSET
1,1
COMMENTS
Column 4 of A239256
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
EXAMPLE
Some solutions for n=2
..2..0..0..2....0..3..0..2....2..0..4..3....0..0..0..3....0..0..3..3
..0..3..0..0....2..0..2..1....4..4..2..0....4..4..0..2....2..2..1..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 13 2014
STATUS
approved