OFFSET
1,1
COMMENTS
Column 5 of A210788
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..18
EXAMPLE
Some solutions for n=4
..2..1..3..3..2....3..3..3..4..4....2..1..3..1..3....3..4..3..1..4
..1..4..3..1..2....1..3..4..1..4....4..3..4..2..1....4..1..4..3..1
..4..4..4..4..1....4..1..2..4..1....3..4..3..1..4....1..4..2..1..3
..1..2..2..1..3....1..4..1..3..2....1..3..1..3..1....2..3..1..3..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 26 2012
STATUS
approved