OFFSET
1,1
COMMENTS
Column 2 of A210788
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
EXAMPLE
Some solutions for n=4
..4..2....3..3....3..4....2..4....1..3....2..1....4..4....4..2....3..1....3..3
..3..3....2..1....4..1....1..3....2..2....2..4....1..2....3..2....2..2....2..1
..1..3....1..4....2..4....3..4....4..3....3..4....3..1....4..4....3..1....4..4
..2..1....4..1....1..3....1..3....1..4....4..2....1..3....4..1....4..3....4..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 26 2012
STATUS
approved