OFFSET
1,1
COMMENTS
Column 6 of A200990
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..22
EXAMPLE
Some solutions for n=3
..0..0..0..1..1..4....0..0..1..1..2..3....0..0..1..1..2..2....0..0..0..2..2..4
..0..1..2..3..3..4....0..1..1..3..3..4....0..1..2..3..3..4....0..1..2..3..3..4
..1..2..2..3..4..4....2..2..2..4..4..4....1..3..3..4..4..4....1..1..3..3..4..4
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 25 2011
STATUS
approved